Shell Rimula X

[johnnysneds]

After blowing the tits out of my clutch ive found out that Rekluse recommends Shell Rottela T Heavy Duty Diesel Engine Oil 15W-40. After researching some more this oil seems to be used quite widely in motorcycle engines. Unfortunately Rottella can only be found in the United States of America! boooo. I had a trip round to the local Shell Station and they had in stock the below products.

900 Baht for 6 Liters

650 Baht for 6 Liters

Fully Synthetic 2,400 Bath for 6 Liters

In Australia particularly this question is asked a lot, and there seems to be conflicting views whether its the same stuff. I had the wife phone Shell Thailand but they were none the wiser as usual.
So anyone had any experiences with using Diesel Oils with your motorcycle, specifically Shell Rimula X??? or seen any Rottella T anywhere

I have also found out that its quite common for Yamaha OEM clutch friction disks to fail with Rekluse clutches. The move to Hinston or Rekluse items hopefully will prevent it happening again in future, hopefully!

 

[LivinLOS]

Have read the same on yammie clutches and the rekluse and read that people suggest using Honda plates due different fibre compound.. Wouldn't have thought they swapped myself but didn't read too deeply yet..

 

[johnnysneds]

Have read the same on yammie clutches and the rekluse and read that people suggest using Honda plates due different fibre compound.. Wouldn't have thought they swapped myself but didn't read too deeply yet..

Correct LivinLOS, they are interchangeable and the Honda items are better quality apparently, strange eh!. However I still think its worthwhile going for top notch discs like Hinston especially if your using a Rekluse and worried about a catastrophic failure again :annie

 

[alexuk]

Is there only one Rotella oil?

I remember it used to be used for certain bicycle hydraulic brakes, but that was a mineral oil.
I have been using Mobil one for turbodiesel pickups in my yzf250

 

[KTMphil]

Is there only one Rotella oil?

I remember it used to be used for certain bicycle hydraulic brakes, but that was a mineral oil.
I have been using Mobil one for turbodiesel pickups in my yzf250

Why wouldn't you use Mobil 1 rated for petrol engines?

 

[johnnysneds]

Is there only one Rotella oil?

I remember it used to be used for certain bicycle hydraulic brakes, but that was a mineral oil.
I have been using Mobil one for turbodiesel pickups in my yzf250

Why wouldn't you use Mobil 1 rated for petrol engines?

Because some "petrol engine" oils for cars (Mobil1) have additives that play havoc with motorcycle wet clutches. It might be ok for bikes with separate systems but not dirt bikes which have them combined.

Alex - Mobil1 Diesel oil might be an alternative. Delo 400 is another, still to research that one

 

[BWG950S]

I use Mobile 1 Delvac 5W-40 for Heavy Duty Diesels in my KTM 950.

 

[Hoghead]

Mobile 1 Turbo Diesel Pickup oil as it is called in Thailand, or Mobile 1 Delvac in other parts of the world.
The reason is that it has far more zinc and phosphorus than other car type oils and all other types of Mobile 1 available in Thailand. As a general rule diesel oils have more of these 2 important additives and that is why bikers use it.

If anything can make a clutch slip is it my HD with double the stock HP on a stock wet clutch. I use this oil in everything I own and in the past 20 years have not had any clutch related problems, nor will it make a properly sealed engine leak.

See the amounts of ZDDP and Phosphorus here:
http://www.mobiloil.com/USA-English/MotorOil/Files/Mobil_1_Product_Guide.pdf
Note that the really good stuff is unavailable here and the Turbo Diesel Pickup is the best we can get locally. The bonous is that this is available at Esso stations so if you need some on the road it can be found, unlike some esoteric bike specific brands.

For those of you with an inquiring mind about these things see this:
http://www.calsci.com/motorcycleinfo/Oils1.html

Just as important is the oil filter and I import Purolator PureOne filters for my bikes. Rather than go over why, read all about it here and the related pages:
http://www.calsci.com/motorcycleinfo/Filters.html#OilFilters

 

[BWG950S]

The Mobile 1 Delvac that I buy here in Thailand comes in the Black container and specifies that it is for Heavy Duty Commercial Vehicles. Not the one that comes in the Grey container for Diesel Pickups.

 

[Tom]

So what's the upshot of this? Are you guys using the diesel oil due to better price/availability compared to oils specificially for motorcycles, or are there any other reasons?

 

[Hoghead]

Tom

Read my post and links and your question will be answered

Is the black container dinosaur oil? The grey one is synthetic

 

[Tom]

Read my post and links and your question will be answered

I did, and, errr, no, not really. There's a lot of tech-speak in the article you link to about various desirable - and some not so much - properties of oils, but my question was why people choose one designed for diesel engines over another that is designed for motorcycles. Unless you are telling me that oils specifically formulated for motorcycles are inferior to diesel oils - and I don't really see any support for that in the oil-article (I checked the specs on some of the Motul and Putoline oils and they are approved to the API-standards that the author says are the best for the purpose) - then my question still stands. If choosing between a diesel-oil and a motorcycle-specific oil (Motul, Putoline,...) of similar types (synthetic/regular), is it merely a question of price and availability?

 

[BWG950S]

Tom

Read my post and links and your question will be answered

Is the black container dinosaur oil? The grey one is synthetic

No the Black Container is 100% Full Synthetic. Not for diesel cars or pickups but for the "BIG" trucks.

 

[johnnysneds]

Hoghead thanks for the links, very informative.

To cut a long story short, the three best options for motorcycles with wet clutches are:

The Rotella being the first choice

• Shell Rotella T Synthetic[/*:m:2hpgfk0e]

• Mobil Delvac 1[/*:m:2hpgfk0e]

• Mobil-1 SUV[/*:m:2hpgfk0e]

The first number/letter combination i.e. 5W, 10W, 15W etc is really of no importance to us in Thailand as it relates to the rating of the oil below 26C.
Don't get anything that has "Energy Conserving" printed on it

So back to my initial query, what is the Thai Shell equivalent of Shell Rotella T? I have sent several emails off to Shell to see if they can assist.
My guess is this is the closest:
At 2,400 Baht for 6 liters its not cheap, but if its best for my engine

The other two options im guessing are readily available in Thailand going by other responses.

Mobil Delvac 1 ESP 5W-40

Mobil-1 SUV

 

[johnnysneds]

Shell couldn't give me an answer for an Asia alternative to Rotella T so ive went for the Mobil 1 Turbo Diesel Pick Up 5W-40 Fully Synthetic.
6 Liters 2,690 Baht, that's 448 Baht an oil change ooooph!!! Now where's those new friction discs.....

 

[Hoghead]

The factors I look for are the API rating, ball wear test, ZDDP and phosphorus content, viscosity index, and availability (this alone knocks out most esoteric bike oils). Price is not a factor as oil is cheap and engines are not.

If they do not publish the data on ZDDP and phosphorous but rather just specify the API rating, then I give it a pass. The last time I searched for the additive data on Putoline (sounds like Quebec french fries) ZDDP and phosphorus was not listed, although they state a decent VI of 160 for ester synthec. I note that the Putoline V-twin oil VI of 123 leaves a bit to be desired in hot running HD engines. If the situation has changed on Putoline publishing the additive specs I would be interested to know.

What is the ZDDP and phosphrous ratings on the black container fully synthetic Delvac? My local Chiangmai shop black bottle Delvac Mobil 1 is not synthetic.

The bottle pictured above is what I use

 

[johnnysneds]

The Mobile 1 Delvac that I buy here in Thailand comes in the Black container and specifies that it is for Heavy Duty Commercial Vehicles. Not the one that comes in the Grey container for Diesel Pickups.

BWG950S Where did you get this from? I think you are correct.

The Mobil Delvac 1 that was recommended from Hogheads link has different properties to the Mobil-1 Turbo Diesel Pick Up

Here's the data links for both:

Delvac

http://www.mobil.com/USA-English/Lubes/PDS/GLXXENCVLMOMobil_Delvac_1_ESP_5W-40.aspx

Turbo Diesel Pick Up

http://www.mobil.com/Thailand-English/Lubes/PDS/GLXXENPVLMOMobil_1_Turbo_Diesel_Pick_Up_5W-40.aspx

 

[Hoghead]

the black bottle Delvac synthetic is what I used to buy in Thailand. The Distributor told me a few years ago that it is no longer available and now I buy the silver bottle turbo diesel pickup oil stuff
Where did you buy the black bottle synthetic Delvac in Thailand?

 

[johnnysneds]

Where did you buy the black bottle synthetic Delvac in Thailand?

Only BWG950S can answer this, he seems to still be able to buy it from somewhere. My local Esso station only has the Black NON synthetic oil too approx 800 Baht for 6 liters

The specs and application for the Turbo Diesel Pick Up does look better than the Delvac!

 

[BWG950S]

I get the 5 liter bottles for 1300 Baht at Home Hub/Mart here in Ubon and have seen it at many other places. Was going to post a pic but you beat me to it.

 

[johnnysneds]

I get the 5 liter bottles for 1300 Baht at Home Hub/Mart here in Ubon and have seen it at many other places. Was going to post a pic but you beat me to it.

WOW thats seems very cheap

 

[johnnysneds]

Mobil Delvac 1 Fully Synthetic is available at the Mobil Centre on the Airport Road, 108 about half way down on the RHS.

They only had 1 Liter bottles in stock. If you bought the whole box you get a discount and it works out at 4,080 baht for the box (12x1 Liter), thats 340 Baht per liter. They will also order you the 6 Liter container but you have to buy a box, 4x6 Liters for 8,712 Baht, 365 per Liter. Obviously better to get the small containers.

Thats such a good deal BGW950S is getting in Udon, 80 Baht cheaper per liter, how can that be!!!!

 

[Hoghead]

the CM distributor would seem to be economical with the truth in telling me that this is no longer available in Thailand
I have asked Mobil 1 in the USA for the ZDDP and phosphorus contents of both and should they choose to answer I will pass it on

 

[Lone Rider]

Robert,

The Thread: Diesel oil - Zinc content which you can find at http://www.earlycj5.com/forums/showthread.php?86554-Diesel-oil-Zinc-content may have the answer on your question on the P and Zn content of a lot of oils including Mobil oils

 

[BWG950S]

They only had 1 Liter bottles in stock. If you bought the whole box you get a discount and it works out at 4,080 baht for the box (12x1 Liter), thats 340 Baht per liter. They will also order you the 6 Liter container but you have to buy a box, 4x6 Liters for 8,712 Baht, 365 per Liter. Obviously better to get the small containers.

Thats such a good deal BGW950S is getting in Udon, 80 Baht cheaper per liter, how can that be!!!!

Not sure if the Big bottles of Delvac in your picture are Full Synthetic or not but the small bottle in your hand is what I use and has the same label on the big bottle.

The big bottles are only 5 liters and not 6 liters as you were figuring. So at 1,300 Baht per 5 liters it is working out to be 260 Baht a liter.

Maybe we can work something out. I post you some Delvac 1 and you post me some Motul MO COOL or Engine Ice if available.

 

[johnnysneds]

Sorry cannot post you any as I'm out the country now. I actually bought the box of Delvac so should last me a good few months riding.

 

[Hoghead]

Here are some specs courtesy of Auke's link, and interesting reading. Note HD and STP red specs

Nothing from Mobil 1 yet as to the additive levels in both types
Mobil 1 Turbo Diesel Pick Up oil is not listed in the following table and the specs are P = 1100, Zn = 1200 per the Mobil 1 link I posted earlier


Name/Vis/P(ppm)/Zn(ppm)/B(ppm)/Detergents(ppm)/API/Date/Type/Source

Amerilube/10w50/1254/1115/3001/SL/04/07/SYN/Blackstone
Amsoil AFL Euro 5w40 701 804 50 1452 SL 11/06 SYN Staveley
Amsoil HDEO 5w40 794 1081 2276 CJ-4 11/06 SYN Staveley
Amsoil Series 2000Racing20w50 1014 1123 12 3209 SM 02/07 SYN Blackstone
Amsoil V-Twin/MC 20w50 1193 1281 3564 SJ 11/05 SYN Staveley
Amsoil XL-7500 5w20 434 532 165 1601 SL 08/06 SEMI Blackstone
Amsoil XL-7500 5w20 334 1096 209 3061 SL 06/06 SEMI Staveley
Castrol Act Evo 20w50 765 1126 1724 SG 05/06 DINO Staveley
Castrol GPS 4STK MC2 20w50 767 1133 1544 SG 05/06 SYN Staveley
Castrol GTX 20w50 1157 1422 1848 SM 11/05 DINO Staveley
Castrol GTX High Mile 20w50 1248 1382 1848 SM 06/06 DINO Staveley
Castrol Syntec 5w40 786 918 1979 SL 09/06 SYN Blackstone
Castrol Syntec 5w50 921 914 58 2628 SM 11/05 SYN Staveley
Castrol Syntec Blend 20w50 937 916 1197 SM 03/07 SEMI Staveley
Castrol Tection Extra 15w40 965 1094 46 2461 CI-4 3/07 DINO Blackstone
Castrol TWS 10w60 425 1294 111 2383 SJ 06/06 SYN Staveley
Chevron Delo 400 15w40 1191 1622 3668 CI-4 06/06 DINO Staveley
[highlight=#ffff40:7gb7oy59]Delvac 1 5w40 1390 1803 76 2583 CI-4 11/05 SYN Staveley[/highlight:7gb7oy59]
Delvac 1300 Super 15w40 1380 1702 78 2388 CI-4 11/05 DINO Staveley
Elf 505.01 VW 5w40 584 1092 2691 SL 05/06 SYN Staveley
Exxon Av Break-in oil 20w50 1 4 23 N/A 11/05 DINO Staveley
Exxon Av Oil 20w50 702 32 33 N/A 11/05 SEMI Staveley
Exxon Superflow 20w50 717 848 96 2650 SM 06/06 DINO Staveley
Ford Motorcraft 5w20 545 848 298 2005 SM 01/07 SEMI Staveley
[highlight=#ffff40:7gb7oy59]Harley Davidson Syn3 20w50 1081 1182 264 1482 SG 11/05 SYN Staveley[/highlight:7gb7oy59]
Havoline 20w50 425 494 87 1049 SM 03/07 DINO Blackstone
Joe Gibbs Racing XP5 20w50 920 1231 504 SG 04/07 SEMI Blackstone
Kendal GT (Vintage) 20W50 1229 1415 2408 SE 11/05 DINO Blackstone
Kendall GT 20w50 904 1233 2885 SM 06/06 DINO Staveley
Kendall GT 10w30 582 872 278 1416 SM 11/05 SEMI Staveley
Kendall GT 10w40 598 897 282 1565 SM 11/05 SEMI Staveley
Lucas Hi Perf. Motor Oil 20w50 386 460 214 1079 SM 02/07 SYN Blackstone
Mobil 1 0w40 761 876 167 2630 SM 03/07 SYN Blackstone
Mobil 1 0w40 796 907 178 2650 SM 03/07 SYN Blackstone
Mobil 1 0w40 808 976 185 3256 SL 04/03 SYN Blackstone
Mobil 1 0w40 706 834 148 2246 SM 02/05 SYN Blackstone
Mobil 1 15w50 952 1030 41 2175 SM 03/07 SYN Staveley
Mobil 1 EP 15w50 1193 1376 228 2970 SL 04/07 SYN Blackstone
Mobil 1 EP 15w50 1062 1279 79 2485 SM 04/07 SYN Blackstone
Mobil 1 EP 15w50 906 1024 72 2071 SM 01/06 SYN Blackstone
Mobil 1 EP 15w50 1315 1428 226 2593 SL 11/05 SYN Staveley
Mobil 1 mx4t 10w40 1277 1460 188 2025 SG 03/07 SYN Blackstone
Mobil 1 mx4t 10w40 1411 1623 188 2248 SG 04/07 SYN Blackstone
Mobil 1 R 0w30 1399 1536 178 3051 SG 02/04 SYN Blackstone
Mobil 1 Super Syn 15w50 1343 1390 205 2601 SL 11/05 SYN Staveley
Mobil 1 Truck & SUV 5w40 1034 1247 51 2826 CI-4 04/07 SYN Blackstone
Mobil 1 V Twin 20w50 1329 1949 204 2130 SG 11/05 SYN Staveley
Mobil 5k Clean 10w40 660 1028 2895 SM 06/06 DINO Staveley
Mobil High Mile 10w40 527 1021 2844 SM 06/06 DINO Staveley
Motul 300V Competition 5w40 1317 1409 19 3273 SH 04/05 SYN Blackstone
Motul 300V Competition 15w50 1139 1130 20 2410 SH 05/05 SYN Blackstone
Motul 505.01 VW 5w40 973 1226 2830 SL 05/06 SYN Staveley
Motul Competition 15w50 1148 1327 11 2723 SH 05/06 SYN Staveley
Motul Tekma Mega 15w40 1220 1737 145 3469 CI-4 05/06 DINO Staveley
Mystik 15w40 1130 1224 3104 CI-4 03/07 DINO Staveley
Mystik 10w50 700 799 2003 CI-4 03/07 SEMI Blackstone
Penn Grade 1 Racing 20w50 664 852 2094 SJ 04/07 SEMI Blackstone
Penn Grade 1 Racing 20w50 801 1058 2827 SJ 06/06 SEMI Staveley
Pennzoil 20w50 501 800 223 2062 SM 01/07 DINO Staveley
Quaker State Q Full Syn 5w50 923 908 1917 SM 11/05 SYN Staveley
Redline 15w50 924 1004 27 2287 SM 02/07 SYN Blackstone
Redline 10w40 1440 1872 3039 SL 11/05 SYN Staveley
Rotella 15w40 843 946 26 1881 CJ-4 03/07 DINO Blackstone
Rotella 15w40 996 1130 32 2054 CJ-4 04/07 DINO Staveley
Rotella 15w40 1278 1555 2946 CI-4 11/05 DINO Staveley
Rotella 5w40 1397 1552 2921 CI-4 11/05 SYN Staveley
Royal Purple 20w50 668 763 2034 SJ 02/07 SYN Blackstone
Royal Purple 20w50 1290 1337 3295 SJ 11/05 SYN Staveley
Royal Purple Max Cycle 10w40 4085 1222 2599 SJ 07/05 SYN Blackstone
Royal Purple Max Cycle 20w50 3179 1030 2142 SJ 04/07 SYN Blackstone
Royal Purple Max Cycle 20w50 3907 1458 2478 SJ 11/05 SYN Staveley
Royal Purple Racing 51 20w50 1285 1417 2639 SJ 11/05 SYN Staveley
Royal Purple XPR 10w40 1034 1741 2709 SJ 12/06 SYN Blackstone
Schaeffer 7000 Supreme 20w50 1249 1626 2451 SL 06/06 SEMI Staveley
Schaeffer 9000 Supreme 5w40 1113 1315 10 3126 SL 07/05 SYN Blackstone
Swepco 306 15w40 763 895 92 1732 CI-4 03/07 DINO Blackstone
Swepco 306 15w40 1238 1476 128 2464 CI-4 04/07 DINO Staveley
Torco SR-1 20w50 363 412 759 SG 03/07 SYN Blackstone
Torco SR-5 20w50 1072 830 10 1481 SG 02/07 SYN Blackstone
Torco T-4SR 20w50 1059 969 1293 SG 05/06 SYN Staveley
Torco TR-1 20w50 670 571 958 SG 03/07 SYN Blackstone
Torco V Series ST 20w50 1030 1286 2231 SG 05/06 SEMI Staveley
Valvoline All Fleet Plus 15w40 1110 1232 3559 CI-4 10/06 DINO Staveley
Valvoline Durablend 20w50 566 732 13 2606 SM 06/06 SEMI Staveley
Valvoline Max Life 20w50 691 879 17 2170 SM 11/05 DINO Staveley
Valvoline Prem. Blue 15w40 1314 1838 158 4329 CI-4 06/06 DINO Staveley
Valvoline Synpower 20w50 605 689 1786 SM 03/07 SYN Blackstone
Valvoline VR1 20w50 1085 1293 17 2242 SL 11/05 DINO Staveley
Valvoline VR-1 NSL 20w50 835 976 10 819 SL 03/07 DINO Blackstone
Valvoline VR-1 NSL 20w50 842 962 11 838 SL 03/07 SYN Blackstone
Bardahl No Leak/Smoke 53 4 0 11/05 O/A Staveley
Boron Motor Silk 116 0 05/06 O/A Staveley
CD-2 Maxx Detergent 1 7 2416 11/05 O/A Staveley
CMW Racing Concentrate 2292 1147 358 06/06 O/A Staveley
GM Cam Lifter Prelube 5710 5876 29004 01/07 O/A Blackstone
GM EOS Assembly Lube 5762 6221 8265 01/07 O/A Blackstone
Lucas Oil Stabilizer 36 13 0 01/07 O/A Staveley
Power Service Oil Extender 3567 4945 6394 11/05 O/A Staveley
Schaeffer Micron Moly 110 5 0 08/06 O/A Staveley
STP Blue 1704 2436 88 11/05 O/A Staveley
[highlight=#ffff40:7gb7oy59]STP Red 2115 3932 901 11/05 O/A Staveley[/highlight:7gb7oy59]
Valvoline Max Life Protect 537 768 22 3871 11/05 O/A Staveley
Valvoline Synpower 356 551 650 11/05 O/A Staveley

It would appear from this table that perhaps my Distributor and the Bob The Oil Guy thread following are wrong and it is not the same stuff as the black bottle Delvac has more P and Zn

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=752686

To further confuse the issue, note that Mobil 1 Delvac in the USA is now called Mobil 1 Delvac ESP

 

[Frank Smith690]

Johnny,

Its been my experience and knowledge that diesel engine oil CANNOT be SWITCHED in petrol bike engines. If you run the bike on diesel engine oil from the first time, then its ok. That comes from Castrol oils and Penzoil.

 

[johnnysneds]

Oops, too late Frank!
If you have a source that would be good, however I've read loads on this subject over the past few weeks and never seen that mentioned. The properties of the heavy duty engine oil are very similar too the motorcycle stuff.

 

[Hoghead]

I would be very surprised if that is true
Still waiting for an answer from M1 re the differences between the 2 diesel oils

 

[Frank Smith690]

No I don't have a source, but I do know from the race teams in australia that they cannot be switched. Why don't you just use Motul 40 weight??

 

[johnnysneds]

No I don't have a source, but I do know from the race teams in australia that they cannot be switched. Why don't you just use Motul 40 weight??

I wish you knew why it can't be switched, can you find out?. I thought you could blend different synthetics no problem. If it is something to do with blending/switching, the engine internals were thoroughly flushed with diesel before the Mobil went in.
It was Motul I had in before and im sure it contributed towards the slipping amongst other things, it wasn't fully synthetic though. I thought i did the right thing in researching for the best possible oil and Shell Rotella T comes out on top with Mobil1 Delvac a very close second.

 

[LivinLOS]

As this is a close enough thread.. What's the story on using synthetic after using regular Dino juice ??

I was told once a bikes been run a lot with normal oil, you shouldn't switch to synth.. But wasn't explained why.. Anyone heard more

 

[alexuk]

I remember the same story about not switching oil on my old kawasaki 750. no idea why
something about detergents?

 

[johnnysneds]

Here's a reply from Mobil1 on this subject:

http://www.mobiloil.com/usa-english...g_From_Conventional_Motor_Oil_to_Mobil_1.aspx

Question:
Switching From Conventional Motor Oil to Mobil 1
There seems to be confusion about how to make the switch from conventional motor to synthetic. I am a do-it-yourselfer. Could you provide instructions?
-- Joe D., Miami, FL

Answer:
The instructions are very easy to follow: Simply change the oil as you would normally. Any “confusion” is just myth. You can switch from conventional motor oil to Mobil 1 synthetic (and back again, if you want), without following any special procedures.

The only exception to this is with a higher-mileage engine that has never used synthetic motor oil, or with an engine that has used conventional motor oil and been poorly maintained. In these cases, you should still follow the same basic oil-change procedures (drain the old oil, remove the old oil filter, put in new Mobil 1 and put on a new oil filter), but you should follow a regimen of one or two shortened oil-change intervals. For instance, let’s say that your regular oil change interval is 5,000 miles. If you’re switching to Mobil 1 under the circumstances mentioned above, make your next Mobil 1 oil change in 2,500 miles, your third Mobil 1 oil change 3,500 miles after that, and then follow your normal 5,000 mile oil-change interval. The reasoning behind this staggered interval is that a high-mileage engine, or one that has seen infrequent oil changes, will likely have a considerable build-up of sludge and deposits. Mobil 1 will help clean the engine as you drive, but it will have to work much harder in a very “dirty” engine, and so it is best to change the oil more frequently for those first few thousand miles. After that, you can rest assured that Mobil 1 is continuing to keep your engine running clean and well lubricated for mile after mile.

 

[Frank Smith690]

If I remember correctly, alexuk is correct about the detergents, I agree there is no problem with changing from normal oil to synthetic oil, but synthetic diesel engine oil is different compisites to petrol synthetic oil. For one reason diesel engine oil is not designed for high rpm engines, with high rpm it stripes out the viscosity of the oil faster. That's why Motul full synthetic states it's for high reving engines. very much all 4T oils are for high reving engines. My bike has 6500 kilometer oil changes, I have done 4000 on this oil change and the oil is still in very good condition. I use Motul full synthetic 15/60 weight. Also you could try the Agip oil, it's full synthetic high rpm race oil, in Bkk you can get 40,50,60 weight, and surprising its actually cheaper than Motul.

 

[LivinLOS]

Thanks for those responses.. Learning new stuff in this thread..