Originally Posted By: hatt
And yes. They are playing with words. .gov rules and accountants write the manuals. The engineers yell from down the hall.
If that were true the millions of people using these oils today in their vehicles would be failing emissions testing left and right with worn out engines. It's not happening. The fact is if 40 years ago when every car in America was using 10W-40 or thicker oil, if you had a crystal ball, and told that same bunch of "engineers", that in 40 years cars in Arizona would have their crankcases full of 0W-16, or 0W-20, or whatever, they would have laughed out loud in total denial.
Yet here we are. And guess what? The cars sold today have better, higher mileage warranties than ever before, and are lasting longer than ever before. These same "engineers" who are "yelling down the hall", are the same one's who produced and tested these oils in the first place. So they have managed to prove they're good at fighting amongst themselves to come to whatever conclusion suits them, depending on whatever argument they're presently engaged in..... Just like here.
What is their argument going to be in another 20 years or so, when all the new cars are running 0w-5, or 0W-10, and all the 0w-16 vehicles are still on the road?
