Rotella Trials

[vt_maverick]

So how is Marvel different from Seafoam? I seem to remember a recommendation from someone (or maybe it's even on the Seamfoam package) to only add the detergent in the last X many miles before an oil change. Agree that you're cleaning the gunk if you put it in at the oil change, but where is that gunk going over the 3-5K miles between changes? Is it just clogging your oil filter that much faster?

[ABDragonVX]

So how is Marvel different from Seafoam? I seem to remember a recommendation from someone (or maybe it's even on the Seamfoam package) to only add the detergent in the last X many miles before an oil change. Agree that you're cleaning the gunk if you put it in at the oil change, but where is that gunk going over the 3-5K miles between changes? Is it just clogging your oil filter that much faster?

If I recall you add the seafoam before an oil change because it slowly deteriorates your oils ability to lubricate parts. It helps lossen up deposits that would otherwise not move between your 3-5k mile oil change.

[Y33TREKker]

So how is Marvel different from Seafoam? I seem to remember a recommendation from someone (or maybe it's even on the Seamfoam package) to only add the detergent in the last X many miles before an oil change. Agree that you're cleaning the gunk if you put it in at the oil change, but where is that gunk going over the 3-5K miles between changes? Is it just clogging your oil filter that much faster?

I've read the same thing about using fuel system cleaners like the stuff from Chevron with Techron. You run something like that in the last tankful of gas before oil change time for the exact reason you stated.

[JAMAS]

I've read the same thing about using fuel system cleaners like the stuff from Chevron with Techron. You run something like that in the last tankful of gas before oil change time for the exact reason you stated.

....am I crazy...or just missing somthing. What does it matter if you add the fuel additive before or after an oil change? They dont mix.

[Y33TREKker]

....am I crazy...or just missing somthing. What does it matter if you add the fuel additive before or after an oil change? They dont mix.

Because particles from deposits that get broken up or dissolved in your intake passages when using a fuel system cleaner can end up in your crankcase via blowby since that mixture ends up in the combustion chamber/engine cylinder.

You can obviously add a fuel additive whenever you want, it just makes more sense to do so in your last tank full of gas before an oil change so that any deposits that get broken up get later removed when the oil filter is changed, and better to remove those deposits at that time rather than leave them in the filter to contaminate new oil.