Ford says categorically not to use fuel additives on my 3.7L. They do say fairly emphatically to use TT fuel (without actually using the words "top-tier". I take that to mean that they didn't take a bribe to make the recommendation.)
Probably the no fuel additive thing is to head off people putting who knows what in their tank instead of PEA.
Probably the no fuel additive thing is to head off people putting who knows what in their tank instead of PEA.
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