quote:You'll see a bigger TBN drop in cold weather, which means the oil is taking a hit. The oil must work harder to fight off all the "nasties" that happen in the engine due to cold weather, especially in short trips where the oil/engine never reaches operating temp.
Originally posted by Last_Z: Hmmmm.....this is what I got from all these posts: Cold weather is hard on the engine, not the oil. It is the engine that suffers when the oil is too thick and the low temp. causes the engine to dump extra fuel in the oil. The question is: Is oil by itself degraded by cold/hot weather and/or extreme ups/downs in temp. Rick
quote:It's not the cold temp that degrades the oil, it's the byproducts of operating an internal combustion engine in cold temps that affect the oil.
Originally posted by Last_Z: I see....so, is it safe to say that the cold weather causes the engine to run out of its normal "calibration", thus making the engine be tougher on the oil thus degrading the oil? Will the oil suffer if you get a quart of oil and put it outside in the cold for say 3 or 4 months.....keeping in mind there is no contamination?? Thanks, Rick