GMC / Chevrolet 4.8/5.3/6.0

Zembonez

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I'm getting close to oil change time... What do you recommend for GM 4.8/5.3/6.0 engines? I was thinking that your SAE 10W-30 100% Synthetic would do the job. Mine is an 07 GMC.

Any recommendations?
 

mc14a

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I can't advise on GM engines but, I've always used Mobil-1 with no problems. Currently, I use 0w-20 Full Synthetic and change it every 5k/5months. :cheers:
 

Black02Silverado

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I'm getting close to oil change time... What do you recommend for GM 4.8/5.3/6.0 engines? I was thinking that your SAE 10W-30 100% Synthetic would do the job. Mine is an 07 GMC.

Any recommendations?

The ATM 10w-30 would work fine in your application. Even the ASL 5w-30 which GM spec's for that engine would work the same. I run the ASL 5w-30 in my 02 5.3l
 

dietz4ibanez

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I have always used 5w-30 in Gas engines during the summer months and saved the 10w-30 or 40 for High Mileage Vehicles and winter months...

In ole black with the 5.7 350 I am still currently using Mobil 1 Synthetic 5w-30 and I never switched to thicker cause our winters are more mild.. I might need to get a thicker oil despite being around 200k miles...
 

Zembonez

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Cold isn't an issue here. Super lightweight oils for cold weather don't really apply.
 

Black02Silverado

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Actually a 5w-30 and a 10w-30 are the same at operating temp. Both are a 30 w oil. It is when they are cold that the 5w flows with less restriction allowing the oil to circulate easier with less cranking effort. But for all general purposes they are the same 30W. Most use the 5w-30 in the winter for ease of cranking and oil flow at startup and then switch to a 10w-30 in the summer. The fact that GM spec's a 5w-30 that is what I run.
 

Carneyman

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We run 15w 40 in all our engines here, from 350's to 454's to 496/502's. Less leakage and oil consumption. Course, you probably don't run your truck 24/7 in 100+ heat for months at a time...

So for you SAE 10W-30 100% Synthetic should work great.
 

Bigredmariner

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Actually a 5w-30 and a 10w-30 are the same at operating temp. Both are a 30 w oil. It is when they are cold that the 5w flows with less restriction allowing the oil to circulate easier with less cranking effort. But for all general purposes they are the same 30W. Most use the 5w-30 in the winter for ease of cranking and oil flow at startup and then switch to a 10w-30 in the summer. The fact that GM spec's a 5w-30 that is what I run.

That's the same here. If the manual or fill cap says it that's what I've used.
 

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