motul 300 vs motul 300ls about to buy some need help.
 

just used the search button 100000 times but don't want to dig through thousands of pages of people argueing what oil is the best..... so don't be like :search:

Which one do I need???? Standing in the store lol.

Normal 300. The LS can be used in the diff but not needed but cannot be used in the tranny

Which store are you getting the motul from? I need to pick up a few bottles of the non-ls stuff.

I guess its not a store... my buddy has an online store and has loads of oils he is getting rid of at his place. Looks like the regular motul is spoken for though.... So looks like im using redline. Thx for the help @Hanakuso This can be deleted now!

It's all good. I'll order it online. I can't find anybody out in the Portland area that carries it in stock.

I used motul 300ls in my trans and rear end.

"100% synthetic lubricant for all mechanical transmissions of high performances and racing cars. For synchronised or none synchronised gearboxes, gearbox/differential, transfer gearboxes and hypoid differentials with limited slip system operating under shock."

I see no reason why this is a problem

I love it and have no issue with second gear notchy issue.

I wouldn't use the ls in the trans, no limit Motorsport is a great source for Motul they have everything in stock and ship fast. Adam is a great dude too!

Thanks Joe.

I may not be the best with everything, but I do have many thousands of dollars worth of Motul in stock at any given point. Tons of 0W20 8100 and 300V, as well as all the tranny fluids such as the Gear 300's, and all the brake fluids. Basically everything they carry.

Adam

Don't want to start a new thread for this question but do you think mixing a can of 300v and 4 quarts of 8100 is a good idea? I've seen it mentioned but seems contradictory to what i've been told in the past.

You can do it with no adverse effect :)

I say keep them separate, 300V is liquid gold. However I believe you can mix the oils. Call Motul USA they are very helpful and knowledgeable 1 (800) 926-6685

The 300 works in both the trans and diff. However, we use the 300LS in our diff, only because we like the lockup characteristic better. Both will protect the diff just fine.

If you park the car in sub-50 temps, please let the diff warm up before driving hard! You'll notice it locking very easily when it's cold.

I like the 300v a lot but just wondering if its overkill since i don't ever get the oil really hot at the track or anything.

You have a good point. For your use the 8100 is probably the best choice.

You want to prep your car for the harshest condition it will ever be exposed to. Doing it once is just as hard on the car as doing it 20 times.

The only way to really know is to do a used oil analysis on your current oil.

I know this is an old thread, but I've been trying to figure out whether to use Motul LS in the diff. You say "we like the lockup characteristic better". How is it different from using the non-LS lube? Is TBR affected? If so, in which direction?

Thanks for any clarifications...
Dirk

The actual viscosity of the fluid is different. The LS is not necessary at all, but if you don't mind experimenting, its only a few bucks.

For that matter I prefer Gear Comp in the differential over Gear300LS, but that's another ~5 bucks or so per liter.

I very much appreciate your prompt response, Mike; thanks!

However, that didn't answer my question: What is the difference in diff behaviour between LS vs non-LS? (I like how the diff behaves with the stock fluid and would prefer that this not be altered significantly.)

Cheers!
Dirk

The Torsen hangs on just a hair longer before it "gives up" and lets the inside wheel spin on hard cornering. Yes, the torsen is mechanical, but changing the fluid does make a difference.

There's the answer I was looking for. LS it is... Thanks, Mike!

Cheers!
Dirk