I'll share with you my trick I did this on a BMW first step I got the supplies. I got a can of B12 chem tool a heavyweight oil like the heaviest weight I could find one quart and I got a bucket of diesel. The first thing I did was add about a quart of diesel into the existing oil. I ran the engine until it was warm I did not rev or drive. Then I performed a normal oil change, changed the filter replaced the drain plug and then filled the entire crankcase as much as I could with diesel I put the cap back on it. And let it sit for about 2 days. Next I drained the diesel which came out black. Then I added the one quart of heavyweight oil and the diesel until the fill line on the dipstick. I ran the engine for about 20 minutes. And then I added half a can of B12 chem tool in the crank case after another minute or two I shut off the engine. Lastly I took the spark plugs out and used a syringe to squirt a bit of B12 chem tool into the cylinders. I let the B12 evaporate until it was just a thin wet layer. After another day I replaced the oil after rinsing it with some cheap stuff changed the filter the car was noticeably quieter at idle and after driving it to the post office and back which is about 7 miles I rev the engine there was no more smoke. It's been about 6 months since I've done that and still isn't burning a drop of oil that I can detect. Best of luck to you and thank you for documenting what you do this can probably help a lot of people.

Such an interesting experiment. Looking forward to the 1zz getting the treatment.

very cool experiment, I've seen a few videos suggesting to use heavy duty oven cleaner. Also seen a guy boiling degreaser then carefully lower the entire engine into the mix. goes in black with caked on oil and comes out like a freshly milled engine block. Hope this was helpful in some way 👍🏽

IMO give it another try with the thinners for 2 weeks, I think it would be beneficial to circulate hot coolant in the engine with an axternal pump to help the thinners with heat ... anyway, good luck, looking fwd Your next video

Great vid- try the thinners with a harbor freight ultrasonic cleaner with thinners - it’s the dogs bollox

Fhats good you showrd a more detailed vid on how the thinners work. On sidenote are you able to take them out with engine still in the car?

Seems berrymans b12 ( if can get in uk) is way to go to dissolve carbon. Theres alot of people trying to solve this issue of oil rings and piston holes clogging up with carbon in these motors. It seems soaks can get the rings unstuck sometimes, but nothing seems to unclog those piston holes. That was quite a risky approach filling whole engine but nice you tried it. I have an idea that might work to clear the holes without removing pistons: fill engine with paint thinners or berrymans or whatever product and oil , but fill to just below the top of the piston when piston is at bottom of stroke. Turning over the engine the underside of the piston will slap into the oil/thinners, hopefully enough force to start to dislodge the carbon in the holes. I envisage that the motor will need to be turned over by starter motor ( or similar) for a long period for this to work, maybe a couple of days. Spark plugs will be out of course. I think starting the engine in this scenario toooo risky. So some sort of power supply direct to starter motor and run it for a few days, the piston slapping into the oil/thinners for a long period might have a chance of clearing those oil holes...............what ya think? I'm following thread of this guy who is trying solve same issue, in fact I think there will be people all over the world tyring to solve this issue, been going on for many years. kzfaq.info/get/bejne/m5-kgbujlb_SnWw.html

Try white spirit 😉