Can you?
Sure you can use peanut oil if you want to.
But the engine isnt going to last long in that case, But diesel oil is slighly different from gas oil for a reason.

Why are you trying to ventrue out when you have a new truck that if you use the "wrong" oil they can void your warranty.

 

Can you?
Sure you can use peanut oil if you want to.
But the engine isnt going to last long in that case, But diesel oil is slighly different from gas oil for a reason.

Why are you trying to ventrue out when you have a new truck that if you use the "wrong" oil they can void your warranty.

My .02 worth: Gas and Diesel engines are two totally different products! Diesels require a higher detergent factor and API rating for your particular engine. Is this your first diesel? I'm a retired driver/manager for Chevron and know what I'm talking about. There are other considerations as well, but those are the two main ones.

 

What is the difference between gas engine and diesel engine oil?

 

The viscosity is higher for one and the additives package differs from the gas. Diesel fuel has additives to control pH/pKa among a lot of different other additives that do diesel specific things. Google that question and I am sure there are published information on the topic.

Like RDF1 said not going to be conducive to longevity of the engine. Can you do it in a pinch because you are stranded absolutely and just drain and replace as soon as you resolve being stranded then return home.

 

diesel oil has "stuff" in it to help capture the soot thats blown by the rings and other "stuff" in it for the catalyst.

 

Thank you for your explanation,it's all driven by emissions equipment rather than because it is a diesel

 

No not entirely driven by emissions. Diesel oil runs from 5w40 to 15w/40 for most diesel engines.
Running gas engine oil 5w/20 in your diesel will ruin it in short order as well as clog the DPF. Diesel engines run hotter than gas engines, hence the higher viscosity.
And yes, Diesel engine oil does have additional “stuff” in it for soot retention etc.
There is a 5w20 oil for diesels for light duty but from what I have read , folks are going up In viscosity.

 

Sure

 

GEEZ

 

The Chevy 3.0 takes 0-20

 

Duely noted

 

The 6.6 dmax and the 3.0 dmax do not use the same oil spec.

It's spelled out in the diesel supplement gm supplies with those engines.

The diesel supplement should have been supplied -- but it can also be downloaded from a GM division website.

 

Where can I buy 0-20 oil for 2025 Silverado 3.0 diesel truck

 

More Information for ACDELCO 109277

 

There are a few tube videos that state 5w30 is better. I will use 0w20 because of the warranty, but if GM approves 5w30 I will switch.

 

You would be wise to use what the OEM recommends as the engineers who designed the engine know more about the preferred viscosity those who think thicker is better. Thicker oil is harder to push through the spaces between the parts. This causes the oil pump to work harder, which in turn increases oil pressure while simultaneously decreasing oil volume. A lack of oil volume results in a decrease of lubrication and cooling, which may lead to a decrease engine part life.

 

Walmart, Autozone, Advance, etc... all stock Mobil 1 ESP-x2 which is DexosD as spec'ed by GM. $28 for a 5 quart jug. I buy 3 at a time and (2) PF66 oil filters at Walmart. Total cash outlay is just under $100 and I get two oil changes out of it since the trucks take 7 qts.

If I take it to the local oil change place and pay them to do it and dispose of it, they charge me $30 for the labor. An $80 oil change on these trucks is a good deal.

 

Diesel oil is high in detergents to keep the engine clean of the carbon/soot from the combustion process.

I have, and still do, run Mobil 15-40 diesel oil in all my gas engines, including my Silverado 5.3.

It keeps the engine clean inside with long life.

Personally. I can see why they went to the thin oil but I feel they are not using good sense when it comes to lubrication.

I would never use any oil thinner than 10-30 and this comes from a trained diesel mechanic.

 

You could probably use Mazola oil, but you would end up looking like Pritzker.

 

Modern engines barely last with the CORRECT oil these days, thanks to all the emission crap. Steer clear of gasoline oil!

 

Oil for gas engines have detergents and rust inhibitors that diesel oil doesn't have. Don't run oil for gas engines in your diesel.

 

My mechanic told me this.

Use only what the manufacturer recommends And always the correct weight / viscosity.

A friend of mine was convinced upsold by an oil change company to use synthetic oil in a high mileage semi-synthetic engine. Edit - by which I mean the engine was designed to use semi synthetic oil and was a high mileage vehicle.
Side note the vehicle I was driving at the time 1985 landrover required Mineral Oil. Semi Synthetic was the new standard oil with synthetic being in very few modern cars at that time being the most modern tech.

It killed it... because it didn't cool it correctly... costing thousands to rebuild.

So now when I'm in getting an oil change and they try to upsell me I just say use what the manufacturer states.

After all it's changed after 5k.

 

My mechanic told me this.

Use only what the manufacturer recommends And always the correct weight / viscosity.

A friend of mine was convinced upsold by an oil change company to use synthetic oil in a high mileage semi-synthetic engine.

It killed it... because it didn't cool it correctly... costing thousands to rebuild.

I find this highly suspicious.

What is a high mileage semi-synthetic engine?

 

0W20 Dexos D...which is what the manual recommends!

 

Oil for diesel engines used to contain zinc to lubricate the valves. Maybe it still does. Zinc clogs gas engines' catalytic converters so don't put oil for diesel engines into gas engines.

 

I run 15/40 Shell Rotella full synthetic oil with a OEM filter in my 2019 6.6 Duramax, however I live in a warm climate.

 

He's asking about the 3.0. Completely different engine!

 

I purchased the GM oil from rock auto and oil filter

 

Don't know. But I'd follow the OEM recommendations in the Owner's Manual.

 

This starts out talking about the 6.2L problems but delves into lower viscosity oils.

 

There are a few tube videos that state 5w30 is better. I will use 0w20 because of the warranty, but if GM approves 5w30 I will switch.

I use 5/30 euro diesel oil in mine love it.

 

Just because a oil is for diesel's does not mean it’s inherently better for a gas engine. Diesel oil is engineered with a higher amount of dispersant and detergent package to deal with the increased amount of soot and other hydrocarbon combustion by-products present in a diesel engine that is not in a gas engine.