Originally Posted By: JHZR2
We are looking for an UCL that will leave a slight oil coating on surfaces, stabilize the fuel and provide some cleanliness without eaving any ash to damage catalytic converters...
For which TCW3 is perfect. Ash in my converter? Yeah right!
The story might be different in a 2-cycle unit, water or air cooled... but were talking apples to oranges.
It's all in the math. One oz per 5 or 10 gallons is not going to hurt your converter.
For example, I posted my VOA of Phillips 66 Injex Pro TC rated oil shows 8 Boron, 8 Mag, 736 Calcium, 7 Phos, and 6 Zinc. So, the total is 765ppm. At a mix ratio of 1oz/5gallons or 640:1 you get a total of 1.2ppm concentration of metal. How long do you think your converter will last with a 1.2 ppm contamination of ash? Pretty much forever I'll say. At 1oz per 10 gallons you are looking at less than 1ppm, which is zero for practical purposes.
You are wasting your money buying TCW3 oil.