View Full Version : Lead Substitute

12-20-2005, 01:19 AM
Anyone out there have any experience with any of the various forms of lead subs...i.e. CD-2...for adding to unleaded gas...16 oz. jug is supposed to treat up to 160 gallons. Pro's --- Cons... I hae an auto gas STC by Peterson's...but still mix in LL every now and then ...

12-20-2005, 01:56 AM
Marvel Mystery Oil, pint to 50 gallons.

12-20-2005, 01:22 PM
I had the same thought, but decided it was less hassle to just buy about 10 gallons of 100LL every 50 gallons or so of cargas, and keep adding a shot of mystery oil to every 5 gallon can. It's worked well so far.


12-21-2005, 09:50 AM
Since MMO is largely kerosene, I wonder if it would actually decrease octane.....also, the amount named is interesting...I thought it was one pint per 18 gal. ???? I normally add it to the oil, but am harboring a suspicion that my fuel flow sensor was gummed up by a tank of it this last year......??

12-21-2005, 01:41 PM
It's something like 4 oz to a 5 gallion can of gas, per the label. At $3/qt at Walmart, might be cheaper to use plain old kerosene. But what about the mystery.........?

12-21-2005, 03:26 PM
The mystery would probably be some light oils, detergents, and 'oil of wintergreen' ....or maybe just the kerosene....and throw in a little transmission fluid.... :roll:

Ron Babos
12-21-2005, 06:45 PM
If any-one cares the octain rating of kerosene is 15-25. Can't see MMO as being a lead substitute if that's the case. Best used for it's intended purpose.