L84 5.3 DFM GM Oil Choices

[redhat]

Add pack probably has alot to do with it, on my L84 I notice a HUGE difference between 0w-20 M1 the dealer puts in(louder idle) vs 0w-20 Valvoline R&P...the R&P is WAY quieter

I have about 1200mi on a dealer oil change (the “first maintenance” that GM gives you as a warranty item — I wanted to go through with the dealer provided OC so it’s on the record). It does sound a bit noisier than even the M1 EP 0W-20 I’ve had previously.

Prob will be changing early and trying out a 30wt this time.

 

[4WD]

UPDATE

I went ahead and changed my oil today. From Castrol Edge EP 0w-20 with 2.8k miles to Amosil SS 0W-40. All I can say WOW! You can barely even hear the engine running unless you open the hood or stick your head in the wheel well. I know a lot of people say it's a phycological illusion. However all the valvetrain squeaking/ clatter is gone even at cold idle. If you own a GM AFM/ DFM V8 you know exactly what I'm talking about. I'm not sure if it's the viscosity or the Amsoil add pack but the oil sure seems tacky/ oily rubbing it on your finger tips compared to the used oil. It's a thick 40 wt but Amsoil says it meets DEXOS R spec. I'm very pleased! Maybe I'll try it next on the 2021 Subaru Outback too.



View attachment 267116

I don’t bcs my 2022 is quiet on 0W20
The 2017 has been on 5W30 from 60k-100k
Neither use oil

 

[z71offroader83]

UPDATE

I went ahead and changed my oil today. From Castrol Edge EP 0w-20 with 2.8k miles to Amosil SS 0W-40. All I can say WOW! You can barely even hear the engine running unless you open the hood or stick your head in the wheel well. I know a lot of people say it's a phycological illusion. However all the valvetrain squeaking/ clatter is gone even at cold idle. If you own a GM AFM/ DFM V8 you know exactly what I'm talking about. I'm not sure if it's the viscosity or the Amsoil add pack but the oil sure seems tacky/ oily rubbing it on your finger tips compared to the used oil. It's a thick 40 wt but Amsoil says it meets DEXOS R spec. I'm very pleased! Maybe I'll try it next on the 2021 Subaru Outback too.



View attachment 267116

What’s your oil pressure like? I run 5w30 in mine and it’s just a smidge higher than 0w20. Curious what it shows with 0w40.

 

[Nuclear_42]

What’s your oil pressure like? I run 5w30 in mine and it’s just a smidge higher than 0w20. Curious what it shows with 0w40.

It’s roughy the same as before. These engines have a variable displacement oil pump. 30-40 psi idling and 55-65 psi cruising on the highway.

 

[redhat]

Yesterday, I dumped a bulk-dealer 0W-20 and a PF63, 1,200mi on it and filled with M1 Euro ESP 0W-30 and another PF63. I will say the top end is quieter and the truck runs as good as before. No weird issues (honestly there shouldn't be) and everything is cherry. Of course only about 50 miles on it so far, but I don't expect any negatives. Only positives with the higher HTHS. I'd imagine this being low-SAPS and having the approvals it does, it'll do the Gen V DI V8 well.

This will be my go-to from now on, and I think I'll also just buy one flavor and run it in my 2005 Gen 3 5.3.

 

[Patman]

Yesterday, I dumped a bulk-dealer 0W-20 and a PF63, 1,200mi on it and filled with M1 Euro ESP 0W-30 and another PF63.

Why didn’t you just leave that 1200 mile PF63 on there? I’m sure it was still perfectly fine.

 

[redhat]

Why didn’t you just leave that 1200 mile PF63 on there? I’m sure it was still perfectly fine.

I originally planned to but there was a decent sized dent in the bottom of this PF63. Knowing the higher pressure the 63s are subjected to, was a touch hesitant with the potential for fatigued metal.

Also worth of note, the filter was not tight at all. I could unscrew it with my hand super with little effort. I did not like that.

 

[Nuclear_42]

Yesterday, I dumped a bulk-dealer 0W-20 and a PF63, 1,200mi on it and filled with M1 Euro ESP 0W-30 and another PF63. I will say the top end is quieter and the truck runs as good as before. No weird issues (honestly there shouldn't be) and everything is cherry. Of course only about 50 miles on it so far, but I don't expect any negatives. Only positives with the higher HTHS. I'd imagine this being low-SAPS and having the approvals it does, it'll do the Gen V DI V8 well.

This will be my go-to from now on, and I think I'll also just buy one flavor and run it in my 2005 Gen 3 5.3.

ESP 0w-30 is very affordable for what it is. Should provide excellent engine cleanliness and resistance to viscosity break down.