15w40 ... I like it.
I didn't see Rotella on the shelf on this side of the border (Canada) but the Walmart brand is supplied by Esso here (Mobil)...I had good results with it. Most oils we buy these days are good and I often wonder if we would see much difference between them given the limited amount of use on some of these engines.
I find mine runs quieter, and I didn't have to add between changes last year. The longest I ran the engine steady was 6 1/2 hours a couple of times and it didn't use any during that period. I change the oil every 20 to 25 hrs but I don't have a filter system on there.
For those of you that might have to motor for extended amounts of time to get home I'd really recommend it. I've been using it for about 5 years and all good!!
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Mo
"Odyssey"
1976 C&C 30 MKI
The pessimist complains about the wind.
The optimist expects it to change.
The realist adjusts the sails.
...Sir William Arthur Ward.
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