I normally change the oil every 3+ years based upon the mileage I put on the rig which is a fair amount. Thanks Jerry. I've always wanted to try that method and now since my body is starting to fight me in crawling under the turd as often as I am use to doing,,,,,

Craig

My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.