Superior Cold-Start Engine Protection
AMSOIL Signature Series went head-to-head against other brands for cold-flow capability – and came out on top.
Videos
Oil viscosity is the measure of its resistance to flow. How quickly or slowly motor oil flows affects how well it protects your engine.
Learn MoreLaboratory tested and proven on the road.
See how AMSOIL products perform in the lab and in the field.
Check out the testsSign up for bi-weekly updates.