Dump the engine oil at 500 miles?

[Atlas]

Bought the truck new, but it had been sitting 5 months on the lot and was probably moved, idled, and run for short bursts about a billion times.

OLM said 95% when I got it; no way of knowing if it was reset, or if the oil was changed at some point. I suppose calling the dealer and asking is an option. Or..

It's got 308 miles on it now and I've got everything to do an oil change if needed.

 

On a previous truck I did 500, 2500, 5000, then every 5k after that. But I'm not sure for the first couple if that's too soon. 5k thereafter seems to be a good balance between being well under the OLM recommendation, and not introducing too much detergent (new oil) too often. I've always used "synthetic" (AcD labeled "full synthetic" or Mobil 1 "full synthetic" - which, as I understand, may or may not be "fully synthetic" but nonetheless seem to perform well for the intended duration, and the ones I use also check the box for using GM-whitelisted oils ala various Dexos spec.

 

Change at 500? or too much too soon? This is for a 2020 5.3 with DFM

 

[Steve-2019]

Do whatever makes "you" feel good about it. 

 

For me, I dump my new vehicle's oil & filter at 1K miles then every 5K miles (or one year) whichever comes first.  

[Grumpy Bear]

4 hours ago, NorthskyblueT1 said:

But I'm not sure for the first couple if that's too soon. 5k thereafter seems to be a good balance between being well under the OLM recommendation, and not introducing too much detergent (new oil) too often.

 

 

 

 

[Atlas]

54 minutes ago, Grumpy Bear said:

 

 

 

 

 

Right. But how would one figure what's worse. High levels of metal and other debris in the oil as the engine completes its first few hundred miles of duty, or maintaining a high level of detergent by changing the oil.

[Black02Silverado]

I would continue doing what you have been doing.  That is what I do on all new vehicles.  Seems to me you are wanting to do it anyway since you have the oil and filter on hand. 

[Grumpy Bear]

3 hours ago, NorthskyblueT1 said:

 

Right. But how would one figure what's worse. High levels of metal and other debris in the oil as the engine completes its first few hundred miles of duty, or maintaining a high level of detergent by changing the oil.

 

So the wife called me to dinner before I had the chance to complete my thought. I don't miss dinner  

 

It's not a 'worse' thing. Oil is not as complicated as some would like you to believe. Neither is wear. There is more wear debris those first few hundred miles. Much of it to small for a filter to catch. Dumping it is the solution. Dispersants and turbulence will hold the small stuff long enough for a drop when done soon after running the motor. Detergents are the thing that keeps the sticky stuff from oxidation from sticking to surfaces. Dispersants keep the small sticky stuff small preventing it from coalescing and dropping out. Don't worry about the base oil or EP additives competing for the metals surface. The Chemist knows what he is doing. You could change oil every hour of the day and hurt nothing but your pocketbook. Same can not be said for wear debris.