If you run in an ideal condition, It will signal an oilchange at 10k. Mine right now with 6100 on the oil is showing ~45% life left. I am planning on changing at 7500 (unless I test it first and find it is fine for 10k). Why waste perfectly good oil? Truckers do it all the time...
Trust me, I used to be in the 3k change interval category in the past. Modern science is changing the way I was brought up.
Recently towed a 11,000lb 5th wheel from Ontario to Arizona and back, a total of just shy of 8000 miles (with side trips). Had the oil changed before we left Ontario and had it changed again in Benson AZ after covering about 3,500 miles. At this point, the DIC was showing 60%.
Our return trip was longer and we drove much harder, in fact towing at between 70-75 mph on the interstate. By the time we got back home, the DIC was showing 9% (the dealer in Benson forgot to reset it). I reckon that I could easily achieve 10,000 miles between oil changes if I went by the DIC.
Incidently, we averaged 11.9 mp(US)g when towing and 21 mp(US)g solo.
Going about 16K kms or 10K miles on mine beteen changes. Must be ideal driving nassdmax? Dealer suggested that was a good max to aim for between changes.
Welcome back railbuff. Lived and worked in "The County" from '73-'83. Loved it! Hope to get your way soon to visit old aquiantances. Have Bloomfield friends stopping in here on WE enroute back from Mesa.
I am assuming that this percentage thing is a post '02 option. Mine will tell me to change my oil but I don't know what it is based on. I change my oil every 10,000 Km and if I don't reset the computer, it will tell me I need to change my oil within a 1000 Km from when I change it. I haven't seen this percentage anywhere - time to leaf through the manual.
Mine seems to be right around 10-11,000 miles, however, I just haven't been able to bring myself to leave the oil in longer than 5,000 miles. Planning on either switching to synthetic and following the OLM, or taking Delo 400 out to 10k and having it analized to see if it can actually make it there without doing damage to the motor.
Thanks for all the replies. I will have to extend my oil change interval based on all the info. I have always done 5000 km changes out of habit. I think I will be cautious and go to 7500 km. Has anyone had there oil tested at say 10000 miles?
how do you find the hrs on an '02???? I have changed mine at 7500 for the dino and 12K for the Syn on my 4th change now. hope to add my dual filter setup and go back to either rotella or mobil t/s when I change again in 7500.
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