Just did a total rebuild on my400, upper and lower ends.I'm going to premix my oil and fuel,and block off my injecter.What type of oil is the best,and what ratio is the best?What is the best way to break in the motor?And for how long?
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96 400explorer-wiseco 30over piston,pretty much stock for now
99 500scram-front and rear racks
01 250ex-rear 2.1/2in. wheel spacers
99 250recon