Quote:
Originally Posted by Dean2
Most diesel mechanics just want the extra service income. I have put hundreds of thousands of Ks on diesels and changed the synthetic oil every 20-24,000 ks. Even the oil change interval on Big Cat truck motors is 200 hours, equates to 20,000 ks on a highway tractor, with standard petroleum oils.
Service intervals on motor home Cat motors, 15,000 to 20,000 MILES, depending on exactly which motor.
https://comnet2.newmarcorp.com/insta...013SPMAINT.pdf
Interesting to hear how well the small GM diesels are working out. Too bad no one is making diesel half tons with a full 8' box on them. |
You math is extremely flawed. I’d like to see the highway truck that can make a living driving 20000km in 200hrs. That is a consistent 100km/hr with no loading/unloading or stopping for stop signs, driving thru town, warming up or cooling down, or to fuel up. I’m willing to bet you have at minimum 500-600hrs on your oil changes that are done at 20 000-24 000 km.
I also use synthetic oil in my Diesel engines and change it out at 250 engine hours. Fuel filters get done once a year. My diesel pickups get oil changed at 8-10000km and engine hours will be 200-250 in that time. I will not disagree with you that you may have been able to get the km out of a synthetic oil change that you did without trouble and the only way to truly tell would be by having your oil tested.