rx7-kid

iTrader: (1)

I was wondering if i can use royal purple for my manual trans and diff. fluid. thanks

RETed

Yes.


-Ted

Silverfc88

iTrader: (7)

Maxgear..

rx7-kid

iTrader: (1)

so it will not do anything bad to my car right since i got an S4. will it improve anything.

RETed

If you use the proper, recommended fluid, you're getting better protection.
In most cases, the transmission shifts smoother.


-Ted

rx7-kid

iTrader: (1)

what is recommanded for my car and have anyone ever try royal purple for their rx7 before.

raptor22

Yes, people I think Royal Purple is fairly common.

That's what I have in my 7.

rx7-kid

iTrader: (1)

so is it better than the fluid from mazda

raptor22

Yes...from what I read, it is among the best

trooper55

I use amsoil, stuff is wicked good, and better priced then most others. just my .02 cents

Sideways7

iTrader: (7)

I personally use Redline, but I hear royal purple is just about as good an probably easier to find in local stores. I haven't heard much about AMSoil's stuff, but if its anything like their motor oils I'm sure its good.

rx7-kid

iTrader: (1)

i mean i'm using it for my diff and tranny

Brody8877

iTrader: (10)

Royal Purple is suppose to just as good as redline for diff and tranny fluid. Remember to use the correct fluid

rx7-kid

iTrader: (1)

what the correct fluid for my car. S4

raptor22

http://www.teamfc3s.org/main/factory...ual/1986_1988/

Here is the factory service manual. it answers all of these types of questions.

Take a look under the "manual transmission" section.

13bturbofc

iTrader: (4)

im not sure if that is synthetic oil but ive heard not to use synthetic in a old tranny cause it will wash the syncros clean and they will grind

Sideways7

iTrader: (7)

Thats bogus. There are people with grinding trannys and they switch to redline or rp (both synth) tranny fluid and the grind either goes away or gets better.
Also, I believe you use RP 75-90 in both tranny and rear end. If you have a lsd, get the one with the lsd additive in it (max gear, I think)

rx7-kid

iTrader: (1)

thanks for the help but im just thinking about changing it because i dont know if they ever change it before when i bought it and now it says 84225 miles on it but i dont think its correct because its hard to believe that a 20 years old car would have that less mileage on it.

rx7-kid

iTrader: (1)

which royal purple do i use for the diff. i have an lsd diff. i went to kragen and saw the manual tranmission oil, 80w-140 max-gear and synchromax. which do you recommend me to use for my tranny and diff. and at kragen i only saw the 80w-140 max-gear oil. thanks

xxpezzxx

well i dont know for sure but i heard that royal purple got sued for stating that there oil was 100% synthetic, but it wasnt, so now it cant be sold in california, but i may be wrong, I use MOTUL