Originally Posted By: CarNewb
Originally Posted By: Spyder7
I usually avoid flushes of any kind, on the basis that if the engine is dirty enough to warrant a flush, then I don't want all that stuff coming out all at once and hoping it gets lodged in the filter rather than somewhere else.
And if its not dirty enough for a flush, then I don't want abrasive chemicals stripping away any beneficial lubricating film.
I prefer synthetic oil and shortened OCIs. Something like PYB would work well too. And a little MMO can be added to either to help the process along.
-Spyder
Good enough, about the MMO i would get if it didnt cost so much to ship Steve was kind enough to get it and send it. But it ended up coming to 30 some dollars so i didnt get it. Im basically looking at these products for my friends 2000 cr-v which has around 121,000 miles on it and seem to have some gunk build up under the filler cap. Reason for this is he added Mobil 1 5W30 and it turned dark in just 4 months, so i figured why not try seafoam or this safety kleen valve cleaner/flush
I would just do a series of short OCIs (2 or 3) using something like PYB, and keeping them to 3k. This will safely and slowly clean any build up. There may not be anything there though, as gunk (including sludge) may form under the cap, while the engine itself is clean. Likewise, dirty oil may only mean that the oil is doing its job of keeping the engine clean, and is not an indicator of sludge or anything to worry about.
My opinion: you're better off just doing a few short OCIs and avoid the Seafoam or flushing. What you see is no indication of any problem, and such steps are unnecessary when there is no verified indicator of a problem being present.
The only thing I'd consider adding is a PEA fuel system cleaner to a full tank of gas. This is safe and does produce results, particularly if its never seen such a cleaning before.
-Spyder