We've all seen the good and bad post's on Autorx... virtually everyone says it cleaned the sludge, some have pointed out the residual varnish still on the engine parts and the waxy crystals in the filters...hmmm. I got to thinking about it, and during re - orders I have discussed this with Frank. As a result, I think Autorx has really benefited from all the feedback here on Bob's site.
Just think about it - First, the feedback lets Frank know just what Autorx will and won't do in automotive applications. I understand that autorx was invented for another industry, and I think all of the metal parts dealt with were cast iron or steel. In those applications, I'm pretty sure Frank DID see all varnish gone. If y'all notice, all of the engines that have been presented as still being varnished after Autorx's applications were aluminum heads, valve covers, and rockers. I got to thinking about it, and I think the porosity of the aluminum accepts the color and hold it much more tenaciously than cast iron. I see that everyday in my shop, when cleaning aluminum vs cast iron. I don't think frank had been exposed to this before, so the members here have really helped Frank learn what autorx's abilities and limitations are.
Also, some have posted pics of a waxy residue in the filters... I guess that got under Franks skin too, as we see he's gone back to the drawing board and upgraded the formulation. Frank has also revised the insructions, due to member feedback.
All in all, I see the feedback - both pro and con - to have helped Autorx become a better and more user friendly product. Someday Autorx will probably be much more widely available, and I see all the feedback on autorx here at Bob's site to be the best thing to happen for Autorx, and all of us who've come to know Autorx as the quality product it is... Steve
My background is in from another field of Auto-Rx type chemistry application. The machinery treated with this chemistry is composed of "Ferrous Metal" and post copied here is correct. Truthfully I never made the connection as to why stains are not being removed from certain engines. Thanks Steve
Toyota Steve
Junior Member
Member # 1791
posted September 11, 2003 09:24 PM
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Drew - your dipstick is steel. I have come to find that Autorx cleans all metals, but does better at removing varnish color from the cast iron and steel parts than it does from the aluminum. It must have something to do with the porosity of aluminum, and the ease with which aluminum varnishes. Because your dipstick is ferrous metal, like your block, crank and rods, it REALLY cleans up well with autorx. steve
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Posts: 23 | From: florida | Registered: Jul 2003 | IP: Logged |
e: Auto-rx as a varnish cleaner
Frank Offline
Registered: 05/28/02
Posts: 2164
Loc: Jacksonville Beach Fl
Auto-Rx will clean varnish off of cast iron most
metals during application process. Aluminum is the exception eventually it will come clean however not during the Auto-Rx application. Varnish is a cosmetic issue and does nothing to performance level.
If your engine is made out of ALUMINUM don't expect auto-rx to clean it up, you will be better off using a cheaper product called Marvel Mystery Oil which actually works better.