Sitting on the shelf in local wallyworld sporting goods depts. are quarts of Pennzoil Super Premium with semi-synthetic clearly displayed on the container along with the TC-W3 rating for half the price of the Mercury/Quicksilver sitting next to it which tells you nothing about the composition, just has the rating. TC-W3 is rated for Two Cycle-Watercraft, third iteration. I have been using it since I first saw it on the shelf and I have very few problems with my TC engines, fuel related or otherwise. I run the internal engine oiler which runs a variable mix % vs RPM and seldom do I see any smoke on the hole shot...after the first shot coming out of the no-wake zone after sitting up and not being used where it's visible somewhat.
On today's oil vs what I ran early in my boating career.....regular 30w motor oil....auto-truck-utility use and specified at 25:1 (a quart to that 6 gallon can), I would run 50:1 in any TC-W engine.
My latest boat is a 2002 model with a 115 Merc. and it has had premium gasoline it's entire life. In checking fuel line composition in the black engine hoses, a swab run through the inside produces zero little black specks of fuel line degradation as compared to my previous boat of the same year running a 90 hp Merc on E10. I like 91 gasoline as I get much better performance and quicker starts than regular gasoline and since my boat sits up for months at a time between outings, that is worth the price difference.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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