oil weight?

skata

Donating Member
i'm just curious as to what oil weight guys with modified motors use.

for a stock motor, mobil 1 10w-30 is recommended. do you use the same with a modified motor?
 
Re: oil weight?

The lightest oil that gives you enough pressure.

I only use the green cap Mobil1 10W-30

I have over 20psi hot idle and more than 40 driving around part throttle.

That's in hot ass Florida, making over 500HP.

The big NASCAR and ProStock engine builders usually like RedLine or RoyalPurple, but I like buying my oil in 5qt jugs on sale at WalMart for $17.88. Plus, I change oil every 1k miles or so, so cheaper is better for me.BJ's wholesale is clearing their supply of the old Mobil1 for $18 a case of 6, FYI
 

100in6

100in6
Re: oil weight?

i ran mobil 1 in my first one and redline in my stokes motor. the redline racing isn't a detergent oil. supposedly makes a little more power but it depends on how long you run between changes and how you drive. i don't think the racing oil is a good choice if you leave it the motor for a long time.

just read a review on filters. the mobil 1 filter got a very good ratings
 
Re: oil weight?

I thought 5W-30 is recommended? I know my original SoGT oil cap says that on it.
Actually I think all of the 4.3's recommend that. Dad's '88 full size and brothers '00 Extreme do too.
Were the SY/TY's different than others because of turbo? Hmmm???

I had a Chrysler Laser with turbo and I think it recommended 20W-50 but I could be wrong.
 

Turbo6

10.20@131.8
Re: oil weight?

skata said:
i'm just curious as to what oil weight guys with modified motors use.

for a stock motor, mobil 1 10w-30 is recommended. do you use the same with a modified motor?

10-30
 

skata

Donating Member
Re: oil weight?

SonomaGTlover said:
I thought 5W-30 is recommended? I know my original SoGT oil cap says that on it.
Actually I think all of the 4.3's recommend that. Dad's '88 full size and brothers '00 Extreme do too.
Were the SY/TY's different than others because of turbo? Hmmm???

.
my fill cap says "recommend mobil 1 10w-30"




i know that running the thinnest oil allowable gives the best fuel economy, but would running thicker oil provide better bearing protection?
 

skata

Donating Member
Re: oil weight?

come on, i know there's more opinions out there.
icon_confused.gif


there seems to be a lot of bearing failures in our motors. i wonder if oil viscosity has anything to do with it.

my old motor had bearing wear also, with low miles.

is it better to use a thicker oil like 15w-40 or 20w-50?
 

SY2455

70's Veteran
Re: oil weight?

With my 83,000+ miles, I run Mobil 1 15W50 with no loss in gas mileage and 40 lb press hot at idle and 60 lb hot driving at 75mph.
 
Top