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21/11/2025LAST POST
Shredicus a écrit
Je veux juste mettre un peu dans mon différentiel parce que le glissement est actuellement limité et je n'aime pas qu'on me dise quoi faire.

Dans ce cas, il est temps de commander du lubrifiant au bacon!

Townending a écrit
Après avoir lu quelques-uns des fils de roulement, et la lecture que cela est causé par une lubrification à l'huile insuffisante, je ne me sentais pas à l'aise avec 10W-60 pour tous les jours. Je serais plus qu'heureux d'utiliser 10W-60 sur la piste.

En utilisant le fluide OEM Castrol et Shell, je n'ai jamais été en mesure d'obtenir le marqueur de température d'huile pour rester à 210F, il augmenterait à 210F pendant que j'étais dessus, mais descendrais à ~ 195F quand je le prendrais facilement. À mes yeux, cela me dit que je ne vais pas obtenir l'huile à la température idéale de fonctionnement.

J'ai ensuite lu sur les utilisateurs (un étant un ami très proche) qui est passé à Mobil 1 0W-40 et a vu une usure acceptable sur leurs roulements. (Je ne peux pas dire avec certitude s'ils ont eu la chance d'avoir une usure minimale, ou si l'huile a réellement aidé.)

Maintenant, avec les informations ci-dessus, j'ai commencé à comparer les viscoisties à l'huile. Après avoir vu les chiffres, j'ai décidé que Mobil 1 0W-40 était trop mince à mon goût. J'avais peur que si je choisissais de vraiment pousser la voiture, le 0W-40 ne serait pas assez épais une fois que les températures commenceraient à grimper.

Je me suis ensuite concentré sur AMSOIL 5W-50 Signature Series, Redline 5W-50 et Motul 5W-50. Motul était un PITA à obtenir, donc cela a été abandonné de mes choix.

Lorsque j’ai pris cette décision, AMSOIL n’avait pas introduit sa nouvelle formule. À l’époque, les statistiques sur papier pour AMSOIL étaient beaucoup plus proches de Redline, elles étaient presque identiques.

Comme je regardais deux grandes huiles avec des spécifications très similaires (basées sur des spécifications testées), j’ai simplement opté pour celle qui avait le plus de sens financièrement. J'achète AMSOIL dans un étui 12QT pour 102 $ * expédié (expédition 1-Jour), ce qui porte à 8,50 $ le litre. Alors que la commande de Redline m'aurait coûté 13 $ le litre, et j'aurais dû payer une tonne pour 1 jour d'expédition via ECS (Mon magasin de choix pour Redline).

Après mon premier changement d'huile avec AMSOIL, j'ai remarqué que le moteur avait un régime beaucoup plus doux en sortant de mon allée après un démarrage à froid. Non seulement cela, mais les températures d'huile restent à 210F pour la conduite quotidienne légère / conduite fougueuse.


Et voilà, mon processus de pensée. Encore une fois, je n'ai aucune preuve concrète disant que 10W-60 n'est pas idéal pour DD. Mais après mes recherches, je me suis senti le plus à l'aise avec AMSOIL ou Redline 5W-50
Townending's user avatarTownending

Merci beaucoup pour l'info détaillée. J'ai remarqué que je n'avais presque jamais atteint le 210 en conduisant normalement.

Vraiment apprécié

Castrol 10w60 or nothing.
Thank you for all the info and documentation!

could you possibly check
Royal Purple XPR 10w60
Redline 10w60
redline 10w40

Thanks!
jeff@autocouture wrote
Thank you for all the info and documentation!

could you possibly check
Royal Purple XPR 10w60
Redline 10w60
redline 10w40

Thanks!
Red Line 10w60 is on the thick side for its grade and won't thin out much with use:
https://www.redlineoil.com/10w60-motor-oil

I'd probably thin it out with a bottle or two of one of their other oils like the 5w40 or 10w40 -- get the HTHS down by 10-12% or so.
dparm wrote
Red Line 10w60 is on the thick side for its grade and won't thin out much with use:
https://www.redlineoil.com/10w60-motor-oil

I'd probably thin it out with a bottle or two of one of their other oils like the 5w40 or 10w40 -- get the HTHS down by 10-12% or so.
thanks Parm :thumsup:
Great information. I don't DD my E92 M3, drive it every 2 weeks or so. Which oil properties should I look for the best cold start protection and leaves a protective coating of oil on the bearing surfaces, minimizing dry start?
I dont understand why some of you guys use other than 10w60. Because of rod bearing issues? it fixes everything or lower the risk? YEAH RIGHT!
e92m3jb wrote
so which oil is better?
I would go with Total. I had a meeting with the Total reps just this week. They were saying that US oil requirements are a joke. European requirements are much higher.

They also said that their 10-60 still have all the original additives. However, the EPA keeps forcing oil manufacturers to take out more and more of the additives.
They took the good stuff out of gas, the good stuff out of bearings, now the good stuff out of oil.
jeff@autocouture wrote
Thank you for all the info and documentation!

could you possibly check
Royal Purple XPR 10w60
Redline 10w60
redline 10w40

Thanks!
Updated the original post with these oils.
Dr. Dre wrote
I would go with Total. I had a meeting with the Total reps just this week. They were saying that US oil requirements are a joke. European requirements are much higher.

They also said that their 10-60 still have all the original additives. However, the EPA keeps forcing oil manufacturers to take out more and more of the additives.
Added Total 10W-60 to the list.
I want to add some recent advice from an experienced S65/85 engine builder. Redline 5w50 is his recommended oil for both stock and stroker applications. he states it helps the engine run cooler, and the 5w50 offers better protection under both DD and hard use.

I run the Motul 8100 10w60 and noticed 2 things.
1. I conistantly hit 210 during DD.
2. I run 20-30 degrees cooler on the track.
I would see 220-230 during DD with LM 10w60 and see 260-270 on track, in cool weather.

Im debating the switch to 5w50 given the recent advice, but Im skeptical.
ham_sammich wrote
I want to add some recent advice from an experienced S65/85 engine builder. Redline 5w50 is his recommended oil for both stock and stroker applications. he states it helps the engine run cooler, and the 5w50 offers better protection under both DD and hard use.

I run the Motul 8100 10w60 and noticed 2 things.
1. I conistantly hit 210 during DD.
2. I run 20-30 degrees cooler on the track.
I would see 220-230 during DD with LM 10w60 and see 260-270 on track, in cool weather.

Im debating the switch to 5w50 given the recent advice, but Im skeptical.
Thanks for the info on the Motul 8100. 20 degrees cooler on track is significant.

I loved Redline oil when I raced, but it left the engine a lot of varnish in the S50 I was running. Granted, the engine ran stupid hot until I went to prepared class and could pull the condenser.

5w-50 probably is too thin for me now that I have BE Bearings in the car (though the mains would probably prefer the thinner 5w-50).
admranger wrote
ham_sammich wrote
I want to add some recent advice from an experienced S65/85 engine builder. Redline 5w50 is his recommended oil for both stock and stroker applications. he states it helps the engine run cooler, and the 5w50 offers better protection under both DD and hard use.

I run the Motul 8100 10w60 and noticed 2 things.
1. I conistantly hit 210 during DD.
2. I run 20-30 degrees cooler on the track.
I would see 220-230 during DD with LM 10w60 and see 260-270 on track, in cool weather.

Im debating the switch to 5w50 given the recent advice, but Im skeptical.
Thanks for the info on the Motul 8100. 20 degrees cooler on track is significant.

I loved Redline oil when I raced, but it left the engine a lot of varnish in the S50 I was running. Granted, the engine ran stupid hot until I went to prepared class and could pull the condenser.

5w-50 probably is too thin for me now that I have BE Bearings in the car (though the mains would probably prefer the thinner 5w-50).
I'm going to continue running 10w60 in mine as well, even though I went with VAC bearings.
-17F here in NH this morning. Drove my wife's E61 535xi. Yesterday it was -7F and I drove my E90M3. Alternating to keep batteries charged -- both new Bosch H8 AGM. I have been running 0W40 since I changed bearings 30k miles ago at 60k total miles in 2014, but am changing all cars to 5W40 to standardize for convenience. Did the E61 535xi, still have to do the E90M3 and E36M3 but its so cold I don't really want to do anything right now.
I like that the RL 5w50 viscosity is quite a bit lighter on the cold end than TWS but fairly close on the warm end although HTHS is a little lower, probably not a big deal.

I'm gonna run 15w50 300V (due to the better HTHS vs RL) for a year and see how that does with a UOA at the end of the cycle. I drive <2000 miles/yr.
ham_sammich wrote
I want to add some recent advice from an experienced S65/85 engine builder. Redline 5w50 is his recommended oil for both stock and stroker applications. he states it helps the engine run cooler, and the 5w50 offers better protection under both DD and hard use.

I run the Motul 8100 10w60 and noticed 2 things.
1. I conistantly hit 210 during DD.
2. I run 20-30 degrees cooler on the track.
I would see 220-230 during DD with LM 10w60 and see 260-270 on track, in cool weather.

Im debating the switch to 5w50 given the recent advice, but Im skeptical.
jc68 wrote
Great information. I don't DD my E92 M3, drive it every 2 weeks or so. Which oil properties should I look for the best cold start protection and leaves a protective coating of oil on the bearing surfaces, minimizing dry start?
I'd continue using a 10w60 just like BMW calls for. Unless you got some sort of pre-start lubrication system (like an Accusump), oil choice won't really change much if the car is sitting for two weeks.
dparm wrote
I'd continue using a 10w60 just like BMW calls for. Unless you got some sort of pre-start lubrication system (like an Accusump), oil choice won't really change much if the car is sitting for two weeks.
Does oil begin to flow through the bearing's journals while the motor is just barely cranking over? ..even before ignition. Also, I would imagine there's a little oil trapped between the crank and bearing shells just by capillary action, especially given the super tight clearances already there :lol:

GM
seevin wrote
I have found some test results with multiple oils:
https://docs.google.com/spreadsheets/d/1fbb9qtL-yWlzDPLzvxzpF01gRRtH8fKxeVtXt6HPpgg/edit#gid=0
Here is the testing method:

Not sure how relevant this test is, but in this comparison Motul seems to achieve the best results of 10W60 oils.

Also, I have found that Liqui Moly 10W60 has HTHS value of about 3.5, which seems to be very low.
I don't generally see a lot of positive feedback surrounding these types of wear tests but I suppose it's a data point.

The HTHS of 3.5 sounds impossibly low for the Redline 10w60
Shredicus wrote
I don't generally see a lot of positive feedback surrounding these types of wear tests but I suppose it's a data point.
The HTHS of 3.5 sounds impossibly low for the Redline 10w60
I wrote Liqui Moly, not Redline. Check the product information, they claim it's >=3,5. Does this mean this oil provides less protection than others ovarall? Not sure how to read it, as it is a parameter measured in a very high temperature of 150C.
https://pim.liqui-moly.de/pidoc/P000342/1390-SynthoilRaceTechGT110W-60-21.0-en.pdf
seevin wrote
I wrote Liqui Moly, not Redline. Check the product information, they claim it's >=3,5. Does this mean this oil provides less protection than others ovarall? Not sure how to read it, as it is a parameter measured in a very high temperature of 150C.
https://pim.liqui-moly.de/pidoc/P000342/1390-SynthoilRaceTechGT110W-60-21.0-en.pdf[/QUOTE

Their tech support is very responsive and informative, email them for clarification. I had a similar question about their MRV result and it turns out they are being conservative. MRV and HTHS are both rather variable so often averages are listed IIRCC.