Has anyone used Seafoam on their 5.0?

5pointGT said:

The only prob is that we only put it through the gas and Oil. You are supposed to put it through you vaccuum tube too. The stuff works just ba carefull cause it has created holes if you have em..

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I don't understand,
It created holes if you have them?
Can you elaborate?

As far as using seafoam in the oil, just take a second to think that through.
You are adding a solvent to the oil which has a viscosity pretty similar to that of water. It will mix with the oil and reduce the viscosity of the oil.
In my mind this is the same as dumpin coolant into the crankcase. Bad things will happen.
It is possible I missed something? If so, someone please explain it to me.

If you are worried about sludge in the engine then running a qt of aod fluid will do a decent job of cleaning the sludge out.
Keep in mind that you add 1 qt of trans fluid to a fresh oil change. Drive the car LIGHTLY until up to full temp (oil temp not coolant temp). Then drain the oil & replace filter. Drive the car a little more, and drain the oil and replace the filter again.
You don't want to have trans fluid in the oil when you start running the car hard, so it is worth the extra flush of the system.

Anyway, that is what I have done a couple times. Mostly when getting a used motor and deciding to run it 'as is'

If you change your oil fairly often you should not have any sludge issues. The oils and fuels we are running today are very good.

My thoughts,
jason

gcwh02, this is exactly what happened to me, put it in and the next day I was getting horrible blow-by, glad im not the only one.

Josh

If you keep it in the oil after addidng it...your using it wrong. I do believe the instructions say to not use for extended use in the oil....it's only for temporary cleansing.

I myself have however have never used it in the oil or fuel...so I can't speak from experience.

Yes if you read the can and read other forums about it, you put a third in the gass, a third in the crank and a third in the vacuum. So this is all supposed to be done just before and oil change. Yes it does break down the viscosity but again thats why you use it just b4 an oil change.

As far as the holes i talked about, if you engine is older over time oil will fill holes in your crank case and gum them up so they dont leak. Well if a solvent is added it will clean these holes out and you will have a leak. This is why you should be careful. I am speeking from experience when i say this stuff is amazing when used in this 3 part way.