Originally Posted By: 91344George
George:
As long as you don't do too many short trips there is no reason to change a quality total synthetic at the 12 month or 6k mark. If it was a dino only I would say yes, but with the premium synthetic you are getting more protection and longevity of the oil with more detergent and other additives to prolong the life of the oil.
If you really want to change at 6k or 12 mos just use a name brand dino or dino/syn blend. Actually the dino blend sounds like what you are looking for, at decent cost+longevity.
Really?
And you base this upon what?
Have you some UOAs or at least research to support this?
Reading the threads in this forum counts for little, since it has become too much of a fanboy forum, where the opinions of those who know no more than you or I are simply repeated.
Spending some time in the UOA forum counts for more.
Personal experience with any given engine on any given oil counts as well, as long as you've run that engine enough miles to actually get into it's life after 150K or so as a daily driver.
Our current daily drivers as listed in my sig represent a fair example of the cars we've used over the years.
We buy them and we keep them.
I would not blindly recommend any time or drain interval for any engine and while PP is a very good oil, I don't think I'd consider it the ultimate oil in any application.
Understand also that syn versus blend versus dino has very little meaning. Some syns show lower starting TBN than some dinos, and also lower TBN retention, meaning that they aren't suited to drains extended in either time or miles.
It's not as simple as saying that a good syn can run X months or X miles. It depends upon the oil, the engine, the climate and how the car is used day to day.
Both Georges would benefit from reading more of what this site offers.
There is a wealth of information here, and the UOA forum is maybe the best place to start.