wgripp

iTrader: (1)

Yes, I already 'd. I think most of you like Mobil 1. This guy I met at a car show this weekend said he picked up a tenth using Royal Purple. Which do you all prefer? What weight?

I have a 1991 GTA with a 350 TPI.

Thanks,
Bill

P.S. What about rear differential fluid? I'm going to need to replace it when I get the rear fixed.

84z28350

I have never run anything too fancy in my cars, at best it got Quaker sythetic blend 10w30 but then again i dont run the thing at the track hitting 7000RPM consistently...


As for the rear, is it a posi?

They can be very picky and sometimes just a regular mineral oil with the posi additive is better that a full sythetic top of the line!

One again in my rear (open) ive just used a mineral 75w90

slohand

quker state synthetic....10w30 in the beast.

run same in my explorer and she has 161,000 and uses no oil.

paulmoore

In my 1998 Trans Am I run Mobil 1 fully synthetic oil. It also has Redline fully synthetic D4 automatic transmission fluid, and Redline fully synthetic 75W90 in the rear diff along with some GM limited slip additive to keep the chattering down.

rx7speed

in my 87 rx7 I use mobile 1 5w-30 in the motor. tranny has mobile 1 75w-90 I think?

the honda is using mobile 1 5w-30 in the motor and also uses 5w-30 mobile 1 in the tranny.

wgripp

iTrader: (1)

I've heard of some guys running 5w30 in their 3rd gens too. Any benefit over 10w30?

Toehead

A lot of people over at the v6 board will suggest 15w-50 mobil one for the v-6's also.

84z28350

Other the fact that its slightly thinner and may free up a pony or 2 if your lucky... No, not really...


You pick an oil that is suited best to your engine, If its a brand new engine with nice tight clearances 5w30 should be fine. if its an older motor and clearances are getting pretty big you may get some knocking and burn more oil than you would if you went with a thicker oil.

My old motor was rattling a bit and after an oil swap to 20w50 it purred again

rx7speed

main reason I use the 5w-30 rather then the 10w-30 is cold start up

the first number is how the oil acts when cold and since here in idaho we can have some cold times when I Start my car figure it couldn't hurt too much. it isn't really going to free up any horsepower being when the motor is warm 10w-30 and 5w-30 are going to be the same viscosity.

again the w number is the cold number

1991CamaroRslow

iTrader: (3)

30 weight Rotella T diesel oil here. For the price and the added zinc you can't beat the good ole Shell Rotella T.

Red Devil

Dejavu!

https://www.thirdgen.org/forums/afte...ic-do-you.html

84z28350

Well it looks like ill be dumping in the $1/gallon stuff for a while


Just sitting around tonight so i thought what they hey, ill go for a rip and see how it runs against the Grand Am again. Well it was pulling real hard off the line for once and with 0 detonation (for once) then at about 3500RPM in 3rd i heard some hard knocking (not deto!) and let off. pulled off to the side of the road only to have a nice cloud of blue smoke trailing me and some lovely knocking and rapping coming from the motor.

Oh well, another 350 bites the dust...

rx7speed

that's it this world is comming to an end. first we have 57kid pawning off his wares and now red devil you have become part of this cult?


so in return I must start a cult

wgripp

iTrader: (1)

Where can I get Amsoil or Redline? Also... what oil filter do ya'll use?

mdricken

I've been told that the domestic oils have a better molecular composition than the overseas stuff. So I use Pennzoil (Pennsylvania oil). I think quaker state and a lot of other off the shelf stuff probably comes from the US.

But I stay away from 'Walmart's finest' cheap crap. That stuff is probably shipped strait from IRAN

1991CamaroRslow

iTrader: (3)

I have seen Quaker State Q high horsepower pour out of a car with 10,000 miles on it and look extremely good for the milleage; impressive to say the least.

Red Devil

Yuppers. But... You already have your wankels!! No fair, if you start another, I'll need a second one too!!

See my sig.

Mmm.. I think the conventional European oil has been a bit better than our conventional oils. They generally have higher OCIs than we do and iirc their minimums are mandated.

Generally, the Walmart and no-name brand stuff, is just repackaged brand name stuff. Not sure on the formulations though. :shrug:

ResurrectingZ

Not me, I use only the best oil.....$0.79 a quart from DOLLAR GENERAL, We are smoking now!!!!!

j/k, I use Valvoline 5w-30, I wouldnt put that cheap crap in my lawn mower, which I found is fun to use seafoam on (neighbors hate the smoke).