reluctantartist wrote:Hey Chris,
What were the issues you had with multiviscosity oil? What are the temps you run 40 weight?
Unless im driving loaded to the gills for extended periods of time, my oil temps are usually really low - under 200*.
Coming home from Maupin last year I did hit 260* which freaked me out a bit, even though it was the first time I had seen such numbers.
When I got back home I tried switching over to Mobile 1 synthetic and I swear that every little oil leak turned into a medium sized puddle with that stuff.
I saw the same with other multigrades that I tried running previously. (but had changed a BUNCH of seals recently and thought I might be able to get away with it then)
The engine would also seem loose, for lack of a better word, with the lower/mutiviscosity oils. It just didn't *sound* right, if that makes sense, like there was more rattling type sounds coming from it overall. With the straight 40 weight ive always seen good oil pressure/temps in most driving conditions and weather. Until just recently I would run it all winter as well (Winter being 45 degrees) - with a operational thermostat in place to make sure everything warms up as quickly as possible. I also try to always start driving as soon as I fire it up, and drive gently while it comes up to temp (don't let it sit there idling with that heavy cold oil for long)
Im always willing to try something else though, so ill give the brad penn or whatever oil a shot and just see how the bus likes it. If it does I might go try some of that Quaker State Defy next and see if I can't get the ZDDP some claim is important AND much cheaper oil (we just got our first Wal-Mart!)