4.0L OHV & SOHC V6 TechGeneral discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.
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Just read the how to for seafoam under how to's.... expect the same things as original sefoam just better cleaning job.... also try search button... it works just in put Seafoam...
I did seafoam, plugs, then changed oil and filter afterwards... just did all together since it was time... i would wait till you need to changed oil and such then do all together since you should change oil afterwards....
I do it about 500 miles before an oil change and use 2 bottles. One in the vacuum line of the brake booster. Then split the other one between the oil and the gas tank. And 500 miles later change the oil.