Oil change interval

[Sparda1123]

How much this report run ya?

Blackstone report is $35

This. They have different tests as well if you go on their website you can select and pre-pay and order the sample kit (free).

 

[thatJeepguy]

According to the pros here's some data on my motor. I beat on my truck and did oil changes at 1k, 5k, 10k. According to the lab, I could go longer.View attachment 430145

That penzoil tends to be on the thin side of viscosity spec….