Just did the Sea FoamŽ through the brake hose today & already have some in the tank ( forgot to use a funnel & filler neck overflowed ). My question is when should Old Rusty get his next treatment? 1 week? 1 month? 6 months? Once a year? He's a '91 F-150 with ??? miles on him. Odometer shows approx. 45,000. Know it's turned over at least once because when I transferred the title it showed approx. 55 ,000. Was told after I bought him " had a new Jasper longblock about 40,000 miles ago ". Having my doubts about this, but haven't decided yet. Does have about 140 lbs. of compression all around, so that's a relief. Does seem to run a little better since the can through the brake hose.

 

once a year.

a good tuneup or even a new set of plugs every year would be more worthwhile.

 

Thanks for the info. Quick Look. Already has had all that while he was at tech school. Also has new filters & PCV valve. This was something I've been reading about on & figured it can't hurt. Did seem to make a slight difference.