|
Our Deere shop used to do it a lot back in the 60s on to the early 80s. I don't think it really worked, but it still was the old "standard procedure" for problem engines. Any engine - but mostly diesels that used oil - would get Bon Ami thrown into the air intake while being revved up. It was supposed to grind the rings back into the cylinder walls. We did it on used engines with high hours and also new rebuilds that were giving problems. I suspect it might of helped some new engines that hadn't seated the rings - but so would of running on the dyno without any Bon Ami. As to it working on worn-out engines? I don't see how - and this resulted in many an argument in the shop between the "yound know it alls" like me - and the old timers. I can tell you this. When someone gave an engine a "treatment" we all had to run out of the shop fast. It really smogged up the place. My boss used to tell us we were sissys since diesel smoke was harmless. So, I'll have to wait and see how long I live before I decide if he was correct.
But, considering I also breathed in a lot of abestos, chewed tobacco, painted tractors in closed shops with no ventilation, smoked three packs of Marboros a day for many years - I'm wouldn't know what to blame if I got sick. I can say the all the "old timers" I used to work with a gone and buried - but some made it to their late 70s.
| 
