yep,

you got it right.. you are fine use it all up..

beers

 

You are definitely the odd one on this

 

so you guys are putting in 75w90 maxgear for tranny and diff?!

 

You can use it for both the transmission and differential.

So 4 days after switching to Royal Purple, I can say that my 1-2 crunchiness is still there sometimes, but my 2-3 shift is now smooth. I guess the factory engineers knew what they were doing when they specced a straight 90 transmission oil (how surprising!).

 

yep.

beers

 

RP tranny/dif fluids was prolly one of the best "mods" I did for the car still to this day.

 

After a couple weeks of RP...still no crunchiness!

 

taka, is that you in that youtube vid?

 

i ended up going with royal purple fluids in my car, oil, gear oil, and tranny fluid, their stuff is top notch, but comes with a price.

Redline oils are nice, but i personally i have never used any of them in my vehicles.

 

When I switched from OEM to Royal Purple the difference was pretty remarkable. After a 30 minute 80MPH drive home each night with the OEM transmission oil, downshifting into lower gears was a pain in the *** once I got off the freeway. This was a minor problem when I bought the car and became a major problem after 40K miles. Once I changed to Royal Purple, it became better than new in my perception.

I changed the oil in the rear differential as well, but as expected I haven't notice any discernable difference.

-Mr. Wigggles

 

Put the RP maxgear in this weekend. I noticed right away that the shifter felt smoother when engaging gears, and while cruising the tranny was MUCH QUITER. This has fufilled both my goals: smoothness and less noise. (I've got the AFE SS, too.)

 

try lightweight redline shockproof transmission stuff.
olddragger

 

^why?

 

RP = good stuff.

Swap my tranny and rear diff couple thousand miles ago , zero hassles.

 

read about the shockproof reline fluid--see what you think about it.
Olddragger

 

I just bought 2 quarts of Amsoil 75W90 it says it's GL4 rated for the tranny. I was going to use the same stuff for the rear diff but that needs GL5 so i just got some Mobil 1 75w90.

 

Colleagues, try to use for your tranny European oils and you feel the real difference! We have a strong opinion here that US brands is cheapest mods of oils without really helpful additives and this because of many reasons, the one is that you change your cars is so fast and there is no need for long life of your internal components, the faster it breakes, the faster you'd go to closest dealer for other car!

Try for example Motul - its a French brand, certainly its expensive, but you feel easy shifting even at extremely low temperatures and you can be sure for long lasting gear box and diff.

I want start new tread about this matter for comparing of oils, so we will see more arguments from both sides but that will serve for one reason - to find proper solution and let it anybody to know all the reasons what to choose.

 

I use Motul for my brake fluid and know about the European (and Japanese) automotive fluid manufacturers. I do not believe that Royal Purple makes a low quality product and in fact if I had felt Motul or any of the other brands was higher quality, I would've gone to the trouble of tracking it down. Maybe before making up your minds that all US products are crap, you should actually try some of the stuff that isn't sold at a Walmart.

 

Easy guys he is just trying to be helpful. He does have a point about our throw a way society. But that is WHY we are looking at the good stuff --right? We dont want to throw it away and get another. Yes there are good ones around from all over the world.
olddragger

 

Put in some amsoil 75W90 GL5 in the tranny and it seems notchy when cold but about the same as before when warmed up. The fluid was pretty dirty and the diff fluid was FILTHY at 10,000 miles.

Also I put in at LEAST 2 quarts of the amsoil and none leaked out, the manual says 1.8 does anyone know how much it actually takes? I stuck my finger inside the fill hole and could fill the fluid but I wonder if I underfilled it?

 

The capacity is a good question. I just put 1.8 (more like 1.9) quarts in and when it didn't overflow decided I should go with the manual.

 

FYI, it's Not Recommended for street use

 

I have Redline & did not notice any improvements - my main complaint is the whine in 6th gear - can anyone tell me if this is significantly reduced with RP ?

 

redline shock proof is not recommended for the diff on the street. can be used in the trans per summitt racing.
OD

 

Yep the owner's manual says approximately 1.8 quarts and the shop manual says approximately 1.9 quarts.

The three that I have changed used the entire 2 quarts.

I put the Amsoil 75w90 Series 2000 in both the trans and diff. There is a definite improvement in shifting.

As others have noticed when cold it is slightly tougher to get into gear. If a person lets the car warm up till a minute after the idle drops below 1,500 rpms it will be easier to do the shift into first. I recommend not downshifting into first unless stopped when it is cold and try shifting into gear just before the pedal goes all the way to the floor. A tough one to remember after a habit is formed.

As for downshifting into first at 25 mph the owner's manual says not to downshift to first above 20 mph.

A rule I follow is not to downshift to first if I am going over 10 mph once it is warmed up.