Originally Posted by angryorc
its manual, for heavy duty, i carry some heavy stuff for business, regarding other fluids i checked their level and they are fine, i was told other fluid does not need replacement just need to check levels, regarding my question i am just worried that current oil might harm dpf, i dont believe it will harm
engine, on another forum they told me it would be fine, just dont run it more than 5k miles on it. so you think next time i should go for 5w40 229.51?
Well, all fluids age. I don't know to what extent your antifreeze coolant or brake fluid would be a concern, but if "original" they would be getting very "tired" by now. Even manual transmission and differential oil could need changing out after 170,000 miles.
Regarding your engine oil, since I know almost NOTHING about DPF systems, I don't know how long you can push things with "high ash" oil. All I know is Mercedes, VW, BMW, and a few other European brands began getting real fussy about oils going into their vehicles. I was interested in buying a Sprinter 5 yrs ago, so I tried to learn a little about why Sprinter oil changes were so expensive, and came across their tables like the ones I shared. I've had 5 yrs to forget what I read, since I bought the Transit (with gasoline motor) instead, but since then, I've seen more and more manufacturers get fussy about oil. That said, in both my vehicles, I am running oils that do NOT conform to manufacturer specs; supposedly the oils I am using are BETTER than what the specs call for. I paid for advice with the Ford, and followed-the-Internet-crowd for my Subaru oil. In both cases I have paid for used-oil analyses. The Subaru results have been quite good, and the Ford results have shown vexing issues, hence paying a cranky old oil expert named Terry for remediation advice. But I'm more the student, not the teacher.
