quote:My GF's VW TDI runs 10k intervals on D1. My turbocharged and track driven Miata runs 5k miles on M1. My '87 Audi 4000 quattro isn't running, but if it were (when it does ) I'll probably run Delvac 1300 at 5k. $0.02, Robert
Originally posted by S2000driver: Please express the longest period of time you would comfortably allow your car to run between oil intervals, in miles. Please express your answers as: SYNTHETIC / CONVENTIONAL Thank you very much for your answer!
quote:With 148.5k and no oil burning, it sounds like your plan works great!
Originally posted by RIP: In my '96 Ford Powerstroke diesel I go 25k between changes using Amsoil S3000 5W-30 with an amsoil BE110 by-pass filter. I also use an engine-saver pre and postluber oil pump to prevent dry starts and oil coking in the turbo bearings. I've been doing it this way since the truck had 23.5k on the odometer. It now has 148.5k and doesn't burn or leak any oil to speak of. If anybody's heard of this type of plan damaging a diesel like mine, please let me know.