Diesel engines.

Cummins12V98 wrote:

45Ricochet wrote:

Cummins12V98 wrote:
First thing if you want to be truly informed join the Turbo Diesel Register "TDR". They are the original RAM/Cummins group. They are not a bunch of guys that mod their engines and then complain about it like some other forums. You will get advice from people that are actually in the industry along with some very seasoned RAM/Cummins guys.

Stick with Mopar or Fleetguard filters. Mopar/Raycor for the frame mounted pre filter. Fleetguard makes the Mopar filters. If there is a filtration warranty issue RAM can deny warranty, DON'T use lesser quality filters!!!!! Amazon has great pricing on all of the filters. Genos Garage is a good place to buy RAM/Cummins parts they are part of the TDR.

Change oil when the computer tells you with a HIGH quality full synthetic 15-40 oil unless you live at the North Pole! I use AMZ/OIL 15-40 full synthetic. At 10K on my oil the computer says 33 percent life left, that is right on for a 15K change.

No fuel conditioner is required.

These Cummins engines are very easy to keep happy!

Change fuel filters when the truck tells you to, up to 15K. Change the air filter at 15K.

X2
But I never used AMZ oil nor synthetic.

If you had seen how spotless the inside of the timing cover was on my Dad's 94 Cummins at 125K when we did his KillerDowelPin compared to my 98 at 100K with the first 55K running Delo 400 then to AMZ/OIL Diesel Marine 15-40 you might consider Synthetic. I was blown away his was a golden clean look and mine was completely covered with black streaks. The guy changed the Delo every 5K and Blackstone samples.

And I've seen many ruined engines running scamzoil on extended oil change intervals and with their scandalous marketing stating API ratings on their bottles when they're actually not API rated.

Any API CJ4 rated oil will maintain a very clean engine with very few piston deposits.

As for the scamzoil producing a golden color that's actually varnish and if you saw this on the aluminum timing case then the iron parts would be worse. I suspect the turbo bearings had this varnish as well.

When I sold my 05 Powerstroke that ran Mobil Delvac 15W40 for 170k miles I could look down the oil fill spout with a flash light and the metal parts still looked like brand new. No varnish or sludge and this was from a conventional oil too.

Today's conventional base oils are much better along with the additives prevent oil oxidation so much better. Here's some of the Delo performance you claim had bad results:

Delo 1

Delo 2

Delo 3