Is Seafoam safe for cleaning up engine oil sludge...

[Allie7]

Or is there a better alternative or are none a good idea?

 

[YelloEye]

I don't really have an opinion on the stuff, I don't use it.

 

[The Other Andy]

I've used it on a previous car, a Ford Taurus, with no ill effects. That was added through a vacuum line though, not used for oil sludge.

I believe I've seen people on bobistheoilguy.com recommend doing a couple of real short oil change intervals with Pennzoil and a good oil filter (not the orange Fram) to clean out sludge before. That would be a safe bet. I'm going off of memory though. Throw this into google and see what you find:

site:bobistheoilguy.com clean oil sludge