OIL Faves?

[JimT]

same as Nilao, Delo 15w40 and Super Tech 80w90.

Like the other guys I've begun to get a feel for when it needs changing. Sounds a little different. In fact it just transitioned a day or so ago. Also track my fuel mileage in a spreadsheet and it automatically calculates my next target oil change based on my running mpg average for that oil. Just so happens I hit that exact mileage interval today too. Unfortunately the oil and gear lube won't be delivered until saturday so she's gotta hold out another 700-800 miles. Roughly 16,000 on this oil, demandated and only slightly darker then when it went in.

For the record, I can also hear the difference when I get about 2 quarts down from the full line on the dipstick.