If you put seafoam in the oil how long should you keep it in there be for changing the oil?

Before you think about turning the key.

How many miles are on your xj

Don't keep it in there long... seafoam is an aggressive solvent. No lubricating properties at all!

Also don't drive with it in the crank case... I cringe when I read of people doing that.

please dont. I'd rather see you drop a quart of oil and put a quart of trans fluid in. Run it. Shut it off. Drop the oil pan. Put it in parts washer. Unclog your oil pickup that is probably covered in crud. And put it all back together with new gaskets and seals.

I like Seafoam, but am not a big fan of adding it to the oil.

If you have a sludge problem in the engine, increase the frequency of your oil changes and over time, it will clean the engine.

If you do use it, I'd let it idle for about 20 minutes, then drain the oil. I would NOT leave it in the oil.

DON'T ADD IT TO OIL! I did and now I have to rebuild my engine! Which isn't so bad cuz now I have a reason to build a stroker!!!

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I added it to my oil with 200k on the dash and but barley a quater bottle, warmed it up drove five miles to the shop and drained it. And it helped with the lifter noise

My engine has 160 on it and it is a 95 4.0 from all the response I dont think ill be doing it thanks for all the in put

Damn, I was thinking about doing this with my 94. Except that it has 241k on her. Was going to do like a tablespoon in the crank case right before I drove 5 miles to town to have my oil professionally changed. Guess not?

I did a 1/3 of a can in the oil for about 30 miles then changed my oil. I didnt have any problems. It quieted my engine down too.

people say dont do it and some say do it..... in my own opinion i say do it. i put in 1/3 of the bottle in and drove up and down the street and than changed my oil...JUST DONT KEEP IT IN THERE!! I did notice my engine has less of a tick and it seems to have free'd up some of my lost HP!

Its in your head. You wont feel that minimal of a gain.

It's really personal opinion. As long as u follow the instructions u won't hurt anything. Our motors like abuse

motor flush is like 3 dollars cheaper for a quart. if u can find it that is.

I've ran the stuff for about 1000 miles before changing the oil. No problems. Also sucked water over 6 months ago, no problems.

Alittle water, like drops, in the tb will bust up the carbon on the valves.