Quote:
Originally Posted by Chris W.
I'm running 15-40 Rotella non synthetic, year round. Where I live we don't get single digit or below zero temps very often, so I don't switch during the winter. I agree that dino oil gets pretty thick in cold temps, but assuming my GP's are working the car starts right up on those few days when we do have really low temperature.
Rgds,
Chris W.
'95 E300D, 457K
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Check the temp of your refrigerator and your freezer. Put a small amount of that 15w-40 oil in there and let it sit for a few hours. Tell me if you think it's actually going to be able to be pumped or if it'll be good at lubricating.
In Tucson we get extreme summers and winters. 110* summer, 20* winter mornings. I run Rotella 5w-40 synthetic year round. If you check the owner's manual, you'll notice 5w-40 is recommended for all temps possible, and it the preferred grade of oil. 5w-40 will seriously improve your cold starting abilities, and when you do the fridge/freezer test you'll see why.
