quote:
Originally posted by JohnBrowning:
Patman I know why you do not use it in your F-Body!! I ask that as a rhetorical question. That is my point. Why recomend and support a product that you know will not work across the baord?
You're not listening to what I'm saying though.
There is no viscosity which works across the board! I'm recommending that people see what works for them, and if 5w20/0w20 is specified for their new engine, and it is giving them low wear in their UOAs, then it's not necessary for them to go thicker. If as their engine ages, they see the wear going up they can then try something slightly thicker to see if it reduces wear. Simple as pie.
quote:
Why support something that you will not use in your most cherished vechiles? If you will not use it in you car why should anyone else use it in theirs?
Once again, you're not listening to me. I said I would consider trying it in my wife's car, but that test will only happen when GC disappears, since if this oil works, I promised myself not to keep changing around. And like I've also said a few hundred times now, I'm not using it in my Firebird because number one it's not specified for it and number two I already know what viscosity my engine likes. I'm only telling people to use it if their owner's manual calls for it, I'm not telling someone with a big block Chevy to run it.
quote:
Why is it that SAE papers are not comeing forward proveing or disproveing this oil.
Who says there aren't any tests like this in the works? I bet there are.
quote:
As far as millage is concerned 200,000-300,000 are both very reasonable number. My point with the high millage is that a vechile with a few oil changes on 5W20 does not really prove or disprove anything yet! We have over 50 years of 30,40 and 50Wt viscositys. We have only a few years of 5W20 on recent oil formulations! Before we throw the baby our with the bath water maybe some more time is needed to see the true long term effects of this new thinner trend!
That's where UOAs come in though. I'm confident enough to tell people that UOA is a good indicator of how long your engine can last, and if you see low wear numbers you're safe to assume you're not hurting your engine.
quote:
Why has Europe with their $3-$4 a liter oil prices not embraced 5W20? Why has Asia not embraced 5W20? Why has the trucking industry not embraced 5W20 oils?
That's a totally different topic though. Those engines are not built to anywhere near the same design as a Honda Civic.
Europe might never embrace 5w20 because people there might be too set in their ways and already don't like using 10w30! But yet people in the US have used it for decades with good results.
Let's look at this another way. People run 5w30 oils that have a viscosity of 10.0cst at 100c, and often thin out to 9.0 cst after 3k. But yet those engines last long. Do you really think a 5w20 with a starting viscosity of 8.8, and ends up at 8.8, is going to be much different in terms of engine wear?
