What oil to use?

[Freight Liner Fever]

I have a 2021 6.2 liter Chevy Silverado 1500 Trail Boss. 35,000 miles

Will Mobil 1 full sinthetic 5W-30 be what I should use?

thanks

 

[Transient]

Sure, if you want to ruin your engine. Owners manual says to use 0w-20.

 

[2KWIK2C]

Also make sure it has the dexos in it. Otherwise voids engine warranty.

 

[Gangly]

Though I don't use 5w30, 5w-30 wont hurt your engine. The lighter viscosity is designated primarily for EPA numbers. Your gas mileage will suffer ever so slightly using a thicker oil, but your engine will be fine.

 

[Transient]

This is what I use. Even though it advertises is good for 10,000 miles I still go of the truck's computer and change it every 7,500 miles.

 

[clstark7]

I have a 2021 6.2 liter Chevy Silverado 1500 Trail Boss. 35,000 miles

Will Mobil 1 full sinthetic 5W-30 be what I should use?

thanks

I was using Royal Purple's synthetic 0W-20, but I ended up switching to Mobil 1's Extended Performance full synthetic 0W-20 oil after doing some research. The Royal Purple was great lubrication, but my research led me to believe that Mobil 1's oil has better cold start lubrication. And I need that out here in Wyoming lol. I also use Mobil 1's Extended Performance oil filter, and I change both at 5,000 miles or five months. It should take eight quarts.

 

[BlackTrailBoss]

I was using Royal Purple's synthetic 0W-20, but I ended up switching to Mobil 1's Extended Performance full synthetic 0W-20 oil after doing some research. The Royal Purple was great lubrication, but my research led me to believe that Mobil 1's oil has better cold start lubrication. And I need that out here in Wyoming lol. I also use Mobil 1's Extended Performance oil filter, and I change both at 5,000 miles or five months. It should take eight quarts.

I use the same..Mobil 1 Extended Performance full synthetic, 0W-20, the weight that GM says to use. I’m of the similar mindset: oil is cheap, engines are expensive.

 

[40feralhogs]

Sure, if you want to ruin your engine. Owners manual says to use 0w-20.

The dealerships here put 5w30 in the 6.2s and 5.3s

 

[Transient]

The dealerships here put 5w30 in the 6.2s and 5.3s

The dealerships might find themselves liable for damage engines. Read the owners manual.

 

[40feralhogs]

The dealerships might find themselves liable for damage engines. Read the owners manual.

I'm aware of what it calls for. Surely there's a logical reason they aren't following the manual though.

 

[Transient]

I'm aware of what it calls for. Surely there's a logical reason they aren't following the manual though.

Have you asked them? Perhaps it's not logical.

 

[OhighoTB]

My understanding the 20w is required for the cylinder shut down. I'm an amsoil dealer and we have always suggested the 20w for all the vehicles that have cylinder shut down. Not sure why but could be for the lifters to work properly. Here is a link to all amsoil suggests for your truck, I have same one.

https://www.amsoil.com/lookup/auto-and-light-truck/2021/chevrolet/silverado-1500-pickup/6-2l-8-cyl-engine-code-l-l87-z/

If want to order something let me know?

 

[Freight Liner Fever]

Thanks everyone

im on my way

 

[40feralhogs]

Have you asked them? Perhaps it's not logical.

Because the motor has the same clearances as the 3.6L which calls for 5W30. A lot of these trucks up here are work trucks and they idle all day to stay warm in the cold during the winter out on site.

Id recommend following the manual as well, but it's not hard to engage in critical thinking skills.

 

[2KWIK2C]

Good news for me I guess! Cylinders never shut off on my engine. Always trying to keep it 6-7 MPG. Premium gas is cheap now!