One mechanics opinion about oil

twodownzero wrote:

Cummins12V98 wrote:

colliehauler wrote:
I change the Oil and filter every 5k miles, very easy to keep track of.

I change mine with excellent reports every 15k. I KNOW the condition of my oil and engine, very few do.

Easy to keep track of.

Just got my oil analysis back after the oil was in the engine for 3 1/2 years and 14,227 miles. TBN was still >7. I could have left it in there!

I have two motors that depend on clean oil for longevity a 5.4 with cam phasers and a 6.0 Diesel, both are know to have problems with dirty oil. My old Dodge I changed every 10k miles and it's still running around town with mega miles on it.