Re: synthetic oil for the north
Dan your correct. If you follow Amsoils recomendations for 5w-30 you will go 25,000 miles per oil and filter change. In a tipicle 15K driving year you would save between 100 and $125.00 over convensional oil change cost. I have been an Amsoil dealer for years and it's the best oil I've ever used by far! Also make sure the 5w-30 will work in the 3.7 and not spike the oil preasure like in the Fords. Ford has voided warranties for not running 5w-20. Their tollances are so tight that 5w-30 oils reek havok with the modular engines.