Weak Mechanic

Watch Real Grease Monkeys – Literally Speaking

This grease monkey video (I wonder if they’re certified?) promotes Castrol oil which we are using right now. The 15W40 and 5W30 is a semi synthetic with CJ4 specification in the 15W40. As you may already know the low ash engine oil is required for today’s emission controlled engines. If you found a barrel of… Continue reading Watch Real Grease Monkeys – Literally Speaking