Another B12 Chemtool Piston Soak Oil burner success with Toyota 2AZ-FE

[Dborch41]

I used an air powered brake bleeder tool with some stiff tubing to get it all out, but a shop vac taped into small tubing would be fine.

That's the only exception I have to an otherwise excellent post. Sucking up a highly volatile solvent like B12 with an electric vacuum cleaner is not something I would recommend.

 

[BrendanC]

That's the only exception I have to an otherwise excellent post. Sucking up a highly volatile solvent like B12 with an electric vacuum cleaner is not something I would recommend.

i’ve done it multiple times, never had an issue.

 

[Elkins45]

all great tricks till you try to do the piston soak on a fricken boxer engine in Subaru.. OOOMMGG.. LOL..

could you at oil change put a bottle of B-12 in crankcase and run at high idle for 10 mins or so with hot engine.. the change oil using Restore and protect?? have a daughter out in Fort Collins with subaru 2016 forester with 100K.. going to suggest Restore and protect ONLY in crankcase for oil changes..

PS if anyone knows of an oil change place that will put in oil you bring in Ft Collins area let me know..

Drive one side up ramps to tilt it as much as you can, mostly to keep it from running out of the valves. If you fill it as high as you can before it reaches the head capillary action will probably get a decent amount up to the top of the rings. I would certainly give that a try if I owned a Subaru.

 

[FALARAK]

You will need to do this every 6 months to keep it reasonable

Well, I guess we have proven that wrong, at least in my case.

14 months later, and it has just kept improving. I read about the problem returning (just like it formed in the first place) however the only thing I can say is that it *appears* that Valvoline Restore and Protect does what it claims..... by removing piston deposits and keeping them cleaner. Moving to 5W-30 oil might have helped a smidge, from the manufacturer recommended 0W-20 or 5W-20. But it had the same R&P 5W-30 in the first OCI, and the oil consumption is *substantially* improved.

I'll be shocked if we ever have to do another B12 piston soak ever again, on this one. But I know others have seen initial improvements, then saw the issue return. However, they did not run Valvoline R&P 5W-30 *only*, and had higher miles on their engine. The YouTube video where I learned about the piston soak was from "DIY Dave", and he recently gave up and just did a piston and ring replacement.