lexuspleus

Vehicle is 2014 RX350 with 90k kms. Still under powertrain warranty.

I had an empty can of Seafoam and read on the back of the can that it can be poured into the engine case to mix with oil and it will do some cleaning. Is this a good idea?

I have a couple cans of seafoam lying around, I use them mainly in fuel tanks for my dirt bikes and quads and cars.

My imagination is telling me magical seafoam in the crankcase, a few weeks before next oil change is due, will "clean things up". Your thoughts?

Clutchless

It is a bad idea to pour a can of Seafoam into your oil and drive around. Just pour it in your gas tank as you have been doing.
Why dilute the lubrication properties of your oil? Just change it more often. Your engine does not need internal cleaning.

LS1

Youl be fine. There have been many tests about sea foam. Now I wouldn't drive around with it for to long in the oil. Put what ever amount the instructions say into the oil and let it idle for a little (10-15 min) or a small 10 minute drive. Then change it out after. It has been proven in tests ( oil has been tested) proving it does help remove sludge and carbon debris. Now its not that extreme where you would probably notice a difference. Ive sea foamed many cars of mine, the smoke show is awesome.

Clutchless

I recall you get the smoke show adding Seafoam into the throttle body. Best done as a spray mist. Pouring it risks hydrolocking your engine. That application method helps remove more carbon from valves.

ukrkoz

I had this done lost track how many times. I normally Seafoam oil about 500 miles before oil change. I have been doing this since hmmm... 2004 or so? On ALL of our cars, and many it was ever since. Never had an issue, always have well running power trains. I also use Transtune, another Seafoam child, for transmissions, before planned ATf change.
I vouch for Seafoam. It's good medicine.

ukrkoz

That or you can remove spark plugs and pour it into combustion chambers and let it sit there overnight. It de carbonates piston rings.
Yes, indeed, starting that engine is quite a show. Starts a bit sluggish, but as it picks up, you end with military grade smoke curtain for a block size. No stink, just dense white smoke.
very cool actually. If you have good neighbors.

lexuspleus

I learnt today that the warranty on mine expired last year. The throttle body version is sold as a specialist Sea Foam product with its own can and its own straw to help spray into the throttle body. The classic Sea Foam is just a can with no straw that's intended to be poured into the crankcase or the fuel tank.

Thanks all for the feedback.