Originally Posted By: demarpaint
Originally Posted By: Spyder7
I was beginning to become skeptical of the utility of a UCL like MMO or tc-w3 - until I did a fillup without it. Now, unless I'm doing a Regane cleaning cycle, either MMO or tc-w3 will go into every fill up as my skepticism is gone.
Its not anything I can quantify or explain scientifically. But the cost of a UCL is negligible, the risk of harm (when used in appropriate amounts) zero, and the benefits - even if impossible to prove or quantify - are real.
I also like the idea of dosing winter oil (beginning near when temps start to reach their lowest) with some MMO (10% for me). I don't expect to prove anything by doing so (as with the use of tc-w3), its just one of those things that makes enough sense for me to do.
PEA based cleaners, MMO (used cautiously), and tc-w3 are the only additives I've found so far to be beneficial. Not that I've tried everything out there, but for my purposes, I can accomplish what I need to with just three as appropriate.
-Spyder
I'm glad you have an open mind and are willing to try for yourself, experiment, then share! Good for you! When the weather gets colder I slightly up the dose of MMO in the gas. I'm not sure if it helps any but the quality of the winter fuel changes, IMO the change is not for the better. Instead of 4 ounces for 10 gallons of gas I'll add 4 1/2-5 ounces.
Originally Posted By: rslifkin
I've noticed something interesting. MMO makes my Jeep idle a little smoother, and has no effect either way on mpg. However, contrary to most peoples' experience, it seems to be a tiny bit slower to start when cold with MMO in the gas compared to without. Warm, however, it still fires at a touch of the key.
Many people are saying that. I believe that a UCL makes for a tighter ring seal giving a smoother idle and in some cases a bit more power in older engines. The better ring seal translates to a smoother idle. Rich Kelly over at Turtle Wax had confirmed this with me.
I've been thinking about going from 3 ounces to 4. And also adding a little more to the 12 ounce dose that's in the crankcase, for about the last 500-1,000 miles of this OCI.
I still haven't put that many miles on this OCI, so it may wind up being my fall & winter OCI. I don't have enough 5W30 PP left for s full OC, so I think I might just let it stretch out until my 5W30 is used up as top up oil, then dump it and put in the 10W30.
Even though this is a cleaning cycle, by using PP & MMO together I don't see any benefit in dumping it after 3 or 4k. This OCI's gotten a lot of top up oil in it and still looks fairly fresh on the stick. It'll need less as the temps cool, but there will still be a regular dose of top up, which will keep the TBN and add pack good.
-Spyder