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Old 10-10-2019, 07:02 PM   #19
Senior Member
City: Great Lakes
Country: USA
Vessel Model: OA 440
Join Date: Aug 2017
Posts: 418
Our boat has become pretty much a dock condo in recent years. I had been leaving the dino oil in the crank case over one winter. Last Spring I switched to Rotellla T6 synthetic because I believe it is the perfect solution for extended "down" periods. Judging from the look of the oil after one season, I might go for two winter storage periods (I'll do an oil analysis before launch this Spring. If I'm comfortable with two storage seasons...I'm making money over dino oil. Further, I swear the engines are running more cleanly with the synthetic. I'm sold on the stuff. $4 a gallon difference...please. T-6 is going in my E-type Jaguar at the next change.
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