Thread: Engine Carbon Clean- DIY, or snake oil?

Originally Posted by rick130

Back in the day, and Blknight Dave will remember this one, we'd use brake fluid to do an in situ de-coke.
The bloke who told me was a RAEME mechanic, and a RAAFie tech confirmed they used to do the same (and use Bon-Ami tipped down the bore to bed in rings in big Oshkosh gensets!)

It makes me shudder now, but it's what we did.

With the brake fluid on little B&S's you'd get chunks of carbon flying out of the muffler!

Engine life was considerable shorter in those days.....

Bon-Ami.... Ajax... and that wasnt to bed the rings, that was for deglazing.


had to get em hot first for the brake fluid trick to work...

Putting the BBQ gas bottle hose in the intake of a diesel that didnt want run well enough to warm up...

8 hour load tests on gen sets on cold days with the genny outside and the load bank in the workshop...