I recently cleaned out the shelf at my local Target and stocked up on M1 15W-50 EP that was on sale at clearance prices. My '03 Accord V6 calls for 5w-20; my 3.5L Chrysler 300Touring calls for 10W-30. Do you think the M1 would be too thick to use in my Accord? Typical summer days here are between 85 -100+ degrees. I'm not worried about the "15W" part but rather about the "-50" part. I use the Accord for long trips and although I might feel comfortable using a synthetic oil in the 30 - 40 weight, I wonder whether 50 is just too much.