Join Date: Jun 2018
Location: Northern Ontario Canada
I'm no professional at this but,
I would make absolutely sure synthetic is ok. And not just go off people saying it "should be OK"....
Generally break ins are done with regular oils.
Reason is synthetic is sooo slick it at times doesn't permit the rings to set to the cylinders properly .......
Personally I wouldn't even risk it. Just run regular Yamalube for the first 300 miles....
2009 Grizzly 550 Special Edition, Red Midnight Armour, EPS, 26"Pitbull Growler BG2.5 xor, on 12"polished alloy SE wheels with 1"spacers, Yamaha overfenders & windshield, Heat Demon grips & thumb warmers, 2500lbs Warn winch, two up seat / storage box, Moose rear bumper, Gold Plugs in diffs & engine, COOP45 machined sheave + 0.5mm shim (3.1:1), 18 gram weights, EPI Orange spring