This statement will probably come back to bite me you know where.
Anyway here goes.
I was running Klotz 20-50.
I changed the oil this morning.
I had 10-40 Amsoil I got of off Brent last year.
Put in in & went for a 80 mile ride.
The slight leak I had is now almost gone.
Both oils are synthetic.
Any answers would be appreciated
