20-50 Oil and My Heritage Classic
by Rick Kessinger
(Pierce City, MO)
I use a 20-50 oil in my 92 Heritage Classic which I change every 2000 miles. I used to change it every 1000 miles but since then I have purchased 2 other Harley's: an 07 road king(synthetic) and an 11 ultra (synthetic).
However I use my used 20-50 for my truck, lawn mowers and quads. Seems to work fine.