Ok guys well i just did oil on all my mowers. I Went with the exmark blue synthetic oil. My dealer said it is brand new to them. Has anyone ever used this stuff all i know is i just pit it in my mowers and its like 8 bucks a quart! Should i expect my mower to blow up after 5hrs or will it be ok???? lol jk I just wanna know if you guys like it or not!