Originally Posted by knunut
Have over 82K, is it too late to change to Synthetic's and get a benefit? Thank's in advance.
It's not too late. Syn will work just as good as conventional oil, but still have some better properites than conventional.
I use synthetic because I have new vehicles that get used under what the manuals consider severe service. I also use it because it has better properties under extreme heat, cold and sludge buildup. That said, if you plan on holding onto the vehicle forever, and will tow in mountains, or extreme cold, sure, but at 82k, the only benefit to you would be the properties of heat and cold. I had 170k on a 1980 307 and only used conventional oil. Though the car didn't do any heavy towing, the body was rotting off, but the engine never burned a drop of oil and the engine would have run at least another 100k it ran that well.