DSkippy

I've heard only good things about Amsoil. First pass was on a motorcycle forum where the person said it was excellent @ silencing clicking valves. I personally use Shell Rotella T conventional in my cars and bikes. Has one of the highest zinc concentrations in conventional (supposed to be good at anti-sheering and doesn't burn off), I've never tried Syntetics, so here's a question, people use synthetics at longer intervals? I used to do 3K now I've moved to 5K (did this with my Subaru as well that got 240 before I killed it in a guard rail)