OIL for my ETEC is AMSOIL full synthetic

larrywitt

Is this oil Ok for my 175HP  motor I have been using the XP100 

lemaymiami

If you are still  under warranty... use what the factory requires... XD 100 oil only... The warranty on my E-Tec is good for almost another four years and I wouldn't consider doing anything that might void it... I've needed some warranty work on my motor since they quit making them - and so far they really are honoring those warranties... This from a guide in hard commercial service... on his fourth E-Tec (and would have bought a fifth one if they still made them when the time came...).