1qckser wrote:what one would you go with for reserve protection and my driving style, I drive very short trips with a few 7000 rpm pulls, also I have not driven my Q 3000 miles since febuary of this year. Im leaning towards the MOBIL 1.
Hmm I may not be Dennis but I will have to do for now..
Check out the oils article in the article section, also the link posted above, to the other poll ,answers some of your questions.
Short summary:Our driving environments are similiar(short trips, some HARd driving), except I drive more miles.I also make sure I drive it real hard (going from 55mph to 11mph up an hill) at least a couple of times a months to keep the chambers clean.I prefer ValvolineSynPower 5w-40, becasue it is higher detergency than MOBIL1 and a readily available 40 full PAO syn.This detergent package is important in our higher mile engines.
I want 40 wieght oil due to my hard revving driving habits.I feel a 30 weight is too thin.Especially a MOBIL1 30 weight, which tends to run in the thinner range of what is still considered reeportable as a 30 weight.ie a 27 weight or so, if u reported it as accurate as that ,instead of the standard SAE viscosity steps.Also MOBIL 1 has a history of losing viscosity and going down in viscosity during use.(oil analysis sources primarily on VQ30 and VQ35 engines).
ValvolineSYnPower as a 30 weigth(in a 10w-30) is a bit thicker at operating temps despite teh same value reported for viscosity.
But I feel I want 40 weight oil.5w-40 is a bit of a larger spread with regardsv to VI's than I like,but with my religously prompt oil changes (3000 miles) its a non issue for me.Aslo in a PAO syn VI's are not such a huge problem to begin with.And the 5w- part enables me to run this oil thru a Kentucky winter.(in Minnesota or so I would go thinner)
THe 40 weight oil that u can get in a MOBIL1 is a 0w-40 probaly a good oil it meets teh same rigirous specs for hard driving that teh 5w-40 from SynPower does, but the spread in a 0w-40 is getting a bit too large for comfort for me even in a full syn oil.
Fred...
Excuse all teh typos I didnt feel like editing this longer write-up.