That's strange, but I believe you. I know it's extremely popular here with everything from Subarus, to bikers, to truck drivers. Seems to be highly durable, high temp/turbo-friendly fully synthetic oil. I think most of it's bad rap comes from the Subaru bois using it and (overly) preaching it's usage over the years. :suspicion:I'll be honest, the only time I heard of Rotella was when I was overseas.
It's not a bad thing, I'm just saying I have not heard anyone from the States using it.
I did 8ys 100K with a 5k interval. Same boat.After reading a LOT about oil, I realize that the whole topic is a never ending debate mixed with facts and opinions.
That said I have an extended warranty of 6 years or 100,000 miles and will be sticking with the Motorcraft 5W-50.
I just bought my RS and notice it takes quite some time for the oil to reach operating temperature and pressure at the current 40F it's been here lately. I'm concerned about the extreme cold winters (-30) and how well the oil will circulate during those cold start ups! A block heater only does so much, so I'm wondering if I should add a oil pan heater as well. After all, the most wear on an engine occurs at startup.
Anyone here with an RS in upper Northern extreme climates have experience with the Motorcraft 5W-50 and cold start-ups?
-40 F? Damn son.There are a few thousand of us in Canada/ Minnisota/ Alaska etc. who haven't had any problem with starting with the factory oil. Mine has started fine without using the block heater (I haven't used it yet) in -35°C (close to -40°F). The engine is designed to run 5w-50 in NA and 0w-40 in other markets.
There is no such thing as 5W50 synthetic blend, 5W50 is Full-Synthetic; if the service advisor said "synthetic blend" then he is wrong or the techs actually put in 5W30 synthetic blend....Unlike me...you all must have stayed awake in chemistry.
i Just had a dealer oil change. They used Motocraft 5W50 synthetic blend. ($64.80 including filter) There comment was, “We won’t sell you anything that will damage your engine”
I drove home, and winterized her until spring. I’m considering eating the $65 and going full syn.
I don’t race, but do “act out” on occasion, it’s an RS after all!