2012 Chevrolet Silverado with Flex Fuel 5.3

[jamesm029]

Hello,
I recently purchased a 2012 Silverado 5.3 V8 truck. It only has 100 miles on it so far. I would like some help in choosing the very best synthetic/blend oil for this vehicle that is available in my area. I always change my oil based on the indicator, which usually ends up being about 5000 miles or 8000km. What 5w 30 fully GM approved oil [/b]would work best. I have heard certain oils range in viscosity even though they are all 5w 30. I have also heard some are better at others in protecting, cleaning and also creating a quieter engine.
I am considering the following oils that are readily available
Mobil 1 , Mobile 1 ext, Penzoil Platinum, Castrol Edge, Quaker State Ultimate. Please help.

 

[Dusty]

Go with whatever's cheapest, probably the Quaker State Ultimate. Any of those oils will keep your engine clean and well protected when doing 5000 mile OCIs.

 

[dave1251]

+1 for on most cost effective. Read into another thread on the 5.3 AFM and oil consumption. I hope you do not have that problem.

 

[jamesm029]

Well I would prefer to pick one and then stick with it where I live they run sales a few times a year right now the Mobil 1 and Mobil 1 extended are the same as the others as they are on sale. Usually they are 5 bucks higher for a big jug.

This is my second silverado the first one burned maybe 1/2 a quart in 5000 miles using plain quaker state.

I have heard some people find that regular mobil 1 is super thin , on the low side of 30 weight while Mobil 1 extended is on the high side of 30 weight. The only issue I had with my last truck in 110,00 miles was knocking or noise on start up it was worse

 

[jamesm029]

I know the Mobil 1 ext is overkill if I plan to change at 5000 miles, however it supposedly has more additives to protect against wear and breakdown. The onsale price is the same as the other oils

 

[2KBMW]

Welcome aboard and congrats on the truck. Remember
to pick an oil thats Dexos 1 approved. I would also
change out the factory fill at around 1600km (1000 mi).