Is anybody still doing a 10-15K oil change?

If I had a throw away truck I wouldn't waste money on oil changes either!

 

Well, to be fair here, while those extended drains "seem" like a lack of common sense, if they are backed up with oil sampling that shows the oil is holding up, then it is not that big of a deal. I wouldn't go that long with my engine and I would grease in a 1/3 of the time they choose to, but if there is solid evidence that doing things in an extended way is not detrimental, then go for it. Detroit is recommending 50,000 mile oil changes, with sampling, and Delo is claiming that in tests, their oil is holding up in those engines for 70,000 miles. So it may seem outrageous compared to what we all are used to, doesn't mean it is outrageous. Technology has come a long way in the last 20 years.

 

My belief is that regular oil changes reduce the amount of slugged build up in the engine, extended oil changes allow sludge build up, and I have always believe a clean engine is a good engine. I'll keep changing my oil at 20,000km / 12,000 miles

 

The whole truck is built for that 500k consumer. From push lock fittings, no grease fittings, etc... Then they sell it to Joe Trucker at an auction with a fresh oil change and he inherits the problems. But for the big company it is perfect.

 

Cool. Everyone has their comfort level. I am not so sure, on the newer engines that sludge buildup is as bad as it might be on the older ones. And an oil sample would show if this was happening due to viscosity increases and depleting TBN in a short period.

I am not comfortable with vastly extended drains either. I do mine at around 20,000 miles. Oil sample still shows oil is good and wear metal levels fine. Just my comfort level.

 

DITTO , probably feel the way I do because I work on my truck and rebuild engines for myself, I just don't trust mechanics, I've seen them stuff up too many times. Heavy jobs like pulling gearbox I pay a mechanic only because I don't have a shed or the jacks, etc, but inframes are easy cause I don't need anything other then a engine crane to lift the head off.

 

if its a cascadia with a detroit 15 in it, there is only 1 oil filter, 3 fuel filters, 1 coolant filter. not 4 oil filters.

 

I've always changed mine at 10,000 miles and have never had any problems.

 

15,000 and a gallon of lucas

 

I do mine every 15 to 20 with 1/5 lucas ad never had any problems.