2 Years Without Changing Oil?

JimK-NY wrote:
I bought my 2018 Ram diesel in the Summer of 2018..

..The oil changes are supposed to be at 15,000 so I took it in for an oil change and they also changed the fuel filters. The dealer charges were just over $700!!!!!..

..I spent a lot of time with online research on this issue. If the warranty had not been a consideration I would not have even bothered with the oil change. Based on mileage and test results, 15,000 miles is very conservative. When condensation is not an issue, oil does not age at least over the period of a couple of years or so. Since I have been thoroughly warming up the engine that is not a concern either. I even wonder about water in the oil for short trips. How does water enter the system?

Dealer AND not just an oil change but oil change on a Diesel PLUS FUEL FILTERS on said Diesel = EXPENSIVE!

Yeah,dealer labor is not cheap, figure at a min of $120 possibly $150 PER HR.

Diesel fuel filters are insanely expensive.. I would hedge a bet that a OEM RAM fuel filter would cost you north of $150 if you bought one at the dealer..

Found a Mopar branded diesel filter kit (both filters) for $103 HERE

So, yeah, having them change the diesel filter most likely padded the bill by $150-$200 for filters plus the additional labor over top the oil change..

But, yeah $700 for oil change and fuel filter change is very pricey, but you do always have the DIY angle to save some change..

I try to avoid having dealer do my work whenever possible..

Moisture in the engine oil, pretty much most of that comes from blow by past your rings, moisture is a byproduct of any combustion process.. Some can come from the air from expansion/contraction that happens from hot to cold, the crankcase is not exactly 100% sealed, there is some allowance for the air in the crankcase to equalize in pressure with the outside air.. That process can bring in some moisture laden air into the crankcase..

Diesel fuel can also pickup moisture from the air..