The old owner of my s2000 which is just got, he did an fluid change, he told me he use mobile 1 for the engine oil and mtf for the tranny but then he told me that he use royal purple 75w140 for the rear, i am not sure about the rear diff, cause i have been reading that mobile 1 75w90 is what people use, so my question is it ok for me to use the royal purple gl5 75w140 for the rear until next change? will it hurt the my car?


thanks for your help

 

Spitfire is the king of lubrications he would know best. The factory calls for straight 90W I use the LE-607 in my diff.

 

I would change it to straight 90w just to be safe is what's recommended

 

yea, i think i am ok too but he told that he just change it couple days ago too, so if it's ok i'll run with it, next time i'll go back to 75w90

thanks for your help

 

Correct. Mobil 1 75w90, Royal Purple 75w90, 75w140 and Castrol synthetic gear oil all are acceptable to use in the differential. LE-607 is the most = to factory recomendation weight. But factory fluid is inferior compare to LE-607 and Mobil 1, Royal Purple and Castrol due to the fact that it is not synthetic. Superior lubrication is the key to the life of our car. So do not cut corner. I use Royal Purple 10w30 for engine and 75w90 for differential.

 

yea like i said, i will go back to 75w90, but i just wanted to know if it would hurt me car is i am running 75w140? he told me it should be fine, cause it's gl5 and it's fully synthetic, but i am going to switch it out my next change

thanks

 

hieu512 Posted on Nov 2 2007, 12:39 AM
Wouldn't it be a better idea to read your owners manual?


If I could not find a straight SAE 90 (110) GL-5 oil and had to use a multiweight gearoil in the diff I would use a 75W-110 or 75W-140.
I would recommend (whatever that means ) the same for people that have to start & drive their S2000 on a regular basis in Arctic temps (below -11F).
Multiweights do flow better.
But IMO 75W-90 multiweight gear oils are too thin at opertaing temp, too thin for the S2000 diff is what I mean.
Honda doesn't recommend a straight SAE 90 for nothing.
They must have had their reasons, its a pity we will never know.
Better safe then sorry I guess.
There's only 1 quart (little less actually) in the diff and its working hard.

S2KPUDDYDAD Posted on Nov 2 2007, 04:07 AM
[QUOTE]Spitfire is the king of lubrications

 

good to know.. how about on the Inline pro diff any differance?

 

I brought the car, but no owner manual, which suck but i can go on here, you guys been a big help

thanks

 

hieu512

Have you looked in the center console glove box? The one under the cover, between both roll hoops for your owners manual?