Join Date: May 2006
Location: Phoenix (Glendale), AZ.
Thanked 22 Times in 11 Posts
iTrader Score: 0 reviews
Since you are using KM's, my guess is that you are from Canada. I don't know the conversion factor of km's to miles but, if you stay within the factory recommended intervals, you should be fine. Also, you will maintain your engine, new truck warranty.
I was changing oil at 5000 mile intervals & started bumping it up using used oil analysis to verify that the oil was still in good, usable condition. My last oil change was at 9626 miles & the oil was still in good, useable condition (Chevron Delo-400, 15w-40, CI-4+). This was done just short of one year in the crankcase. I believe you have to change, at least, on an annual basis, no matter how many miles on the oil, to maintain warranty.
The "new" oils are now a CJ-4 rated product. Many people feel that the latest formulation is not as 'robust' a product as the previous CI-4+ oil. The CJ-4 is designed for the newest engines with all the emissions stuff & the ability to use ONLY ULSD fuel. It is supposed to be "backwards compatible" however, it does not SEEM to be able to deal with the higher levels of sulphur & the acids that build-up from combustion & high sulphur fuels. It doesn't SEEM to have the additives to deal with higher levels of nitric acid, etc. There is still a lot of LSD available, at least in my area of the country.
On the other hand, some people have run the newer oils, especially the Shell Rotella, for 10,000 mile oil change intervals, tested the oil using used oil analysis & found the oil to still be in good useable condition. So, the new oils may be stronger than many of us think they are.
Once I have to start using CJ-4 oils, I will reduce the miles on the oil changes &, again, start doing used oil analysis to see what condition the oil is in. That way, I will know how MY engine is doing with the new oils.
The Cummins engines are considered to be pretty easy on engine oil.
'03,Q/C, 3500, 4X4, 6-sp.,Mild Mods
'91.5 W-250, ATS, 16 sq.cm. Alcoa
'98 Nash 25-S Travel Trailer