MMO??? Marvel Mystery Oil??? How much per tank full??? ...
FWIW, I use MMO in the fuel only, not in the oil. I could never “get” the concept of adding something that would “thin” the oil viscosity.
MMO recommends adding 4 ounces per ten gallons, or 0.4 ounces per 1 gallon.
::Marvel Mystery Oil::
For my RKC 6 gallon tank, that would be 0.4 ounces X 6 = 2.4 ounces, which I round out to 3 ounces of MMO per full tank.
My daughter saves me the plastic 6 ounce Baby Juice bottles, and I keep two of them full of MMO in my saddlebag always. I add at the pump, based upon how much fuel I’m adding to the tank.
I've been using it since '67. My Father used it since waaay back when, and he turned me on to it. They used to have little glass bottles that you would mount on a cars firewall, and a hose would run to the Vacuum port of the intake manifold(s). Every time you let up off the gas pedal, a few drops would get sucked in.
I’ve never had a fuel system or valve seat, valve seal issue
ever. MMO also keeps injectors clean, etc. Snake Oil? Maybe, but when something works for me, I stick with it. I tend to keep and run bikes up to the +100,000 mile mark, and so far / so good, so I’m a believer.
15,000 Miles/year divided by 40 MPG = 375 gallons of gas/year X 0.4 ounces per Gallon = 150 ounces/year. One Gallon is 128 ounces, and a gallon jug of MMO runs about $22 Bucks. So I use just over a gallon of MMO in the bike per year at 15,000 miles/year average.
I buy it by the Gallon jug, and I figure it costs me about $25 bucks a year for the stuff, which is extremely cheap insurance IMO.
I’m not recommending this, nor promoting it, just telling it like it is. I also use MMO in my riding Mower, Snow Blower, and Tractor. Not in the cars as in the aforementioned schedule, but once a month or so.
Try it for awhile.. see what you think.
Bob