- - - - - What engine do you have, for how long and what OIL do you put in it?

Oil and filters get changed ~12,000 miles on all of the below trucks. No additives or bypass filters.

1998 M11 Cummins. Chevron Delo 15w40. Had truck since 2007. No oil related problems
2001 6NZ C15 Cat. Chevron Delo 15w40. Had truck since 2002. Engine has never been opened.
2005 C15 Acert. Chevron Delo 15w40. Had truck since ~2011. There is a little nick on one of the cam lobes.
2008 Cummins ISX. Chevron Delo 15w40. Had truck since new. No oil related issues.

 

I am still running an old B model. The original owner keep meticulous records, plus my Dad was about the only one that he would let work on it unless an emergency. It had almost 950000 miles on it when I pulled it out to major it. It had been inframed twice before that which Dad done both times. Shell Rotella is all that ever been put in it to my knowledge.
Funny part is the first owners widow gave me the maintenance records on it when I bought it. It was done the first time in 1990 with cyl packs, head, rods and mains,injectors, and Dad built the injector pump. Parts and labor out the door was 6100.00.

 

series 60 Detroit. Bought in 2005 @ 970,000 overhauled at 864,000 now has 1,790,000 replaced 2 injectors use bypass systems OPS-1 and a Spinner II sample about 20,000 miles, change OPS and keep trucking. Change Spinner II every 9 months. Change full flow spin on filters every 4 months. Opened up air filter canister so engine gets air from under hood too FLD120 Freightliner. But I don't go off road as a carhauler. No use of Lucas or Motorkote.

 

Cat C-15
delvac changed around 15k
pushing 900k
2 injectors

 

Ditto. ditto

 

12.7 60 series 1.2mill 300k on bottom end 5k on head and injectors mobil delvac every 15 or whatever the oil analysis says. no additive or anything. I am gonna use synthetic and put a bypass system on it this year and run longer on my oil changes

 

3406E. 2WS. Had 1,180,000 when I bought the truck with 80,000 on a rebuild. Now has 1,755,000. The only engine work I have done is run the overhead, replaced oil pan gasket and move crankcase breather tube from the side of the motor to the valve cover on top like the 6NZ. Change the oil every 15000 miles using Mobil Delvac, Add a gallon at 8000. Starting to get a good bit of blow by but have not lost power or fuel mileage. I will rebuild it again and ride for another million. Plan on putting a bypass system on when I rebuild it.

 

Detroit 12.7 565,000 on it when I got it with a fresh rebuild. 1180000 now never been opened. Delvac

 

Mack E7 ( recently sold ) Mystic 15w50, used no oil at 900k bought at 600k. Change every 10k and use dog filters. No additives, don't believe in them, rather put bucks in quality filters.

Majestic is a Mystic wannabe, not the same, just a slight of hand.....

JMO

 

guess there's no consensus for volvo's, mercedes, and maxxforce. LOL.