Jacko3 wrote:The oil discussion will never end. Hahahahah! I love it. I use Royal Purple---best oil I have used so far, so long as you are prepared to routinely flog your car beyond 4,500 RPM. If you drive normally, it is a total waste of money.
I moved from the dealers Pennzoil blend, to Mobil 1 Full Synth to Mobil 1 EP Full Synth to Royal Purple. Each move got better. Both Mobil 1 EP Full Synth is fantastic in heat dissipation and warm up than regular Mobil 1 Full Synth---its like night and day.
Royal Purple is even 5 % - 10% better than Mobil 1 EP Full Synth as far as warm up is concerned. As for heat dissipation, Mobil 1 EP Full Synth seems to me to be about 5% better than Royal Purple. Of course, these results are under normal driving condition.
Mobil 1 EP Full Synth will provide a relatively fast warm up time as with Royal Purple, though Royal Purple warms up faster than Mobil 1 EP Full Synth.
Now, if you live on the edge and want to feel true performance, Royal Purple is the oil to have in your car. What it looses in heat dissipation when compared to Mobil 1 EP Full Synth under normal driving condition, it gains by giving the car more power than the Mobil 1 EP products, and thus a faster car has more air flowing under the hood which invariably helps the car cool better.
Again, Royal purple is uselsess in your car if you are not prepared to flog the heck out of the car. I will gladly stick with Mobil 1 EP Full Synth if all i do is highway driving or normal driving.
Royal Purple is so good, in terms of power, that at exactly or almost 5,000 RPM, you actually feel the car get a little jolt of instant power--it feels something like 1 PSI after 5,000RPM. And with test pipes, which I currently have on my car, the car you are smoking better be a V-8 or else it is toast.
And, I change my oil with Royal Purple at 3,000 miles or less. 3750 miles is for Infiniti/Nissan. 3,000 miles or less is for Jacko. Until God creates an oil, and performs an oil analysis, and sends the data from the labs of heaven to unworthy mankind on earth, my oil will never see beyond 3,000 miles. I have seen the value of frequent oil changes in my little nissan that has 251,000 miles on it.
Royal Purple = Hard Driving
Mobil 1 EP Full Synth = Normal and Daily Driver.
These are just my experience and 2 cents. The way you drive, and where you drive, should determine which oil to use. But its good to know how each oil behaves under different conditions in order to make informed choices. An engine with a far more frequent oil change, regardless of oil used, will be in far better shape than one that tries to stretch the oil to theoretical limits.
I agree with most of Jacko's comments, save for two.
Everyone has a preference that works for them, but I disagree that there are adverse effects to changing past 3K miles. With the tighter tolerances and better filtration of today's motors, along with better oil filter technology, the 3K stigma is only relevant to older cars and your local Jiffy Lube looking for more revenue. I'm not an advocate of running 15K like BMW states (cost cutting to their free maint program), but 5K is more than reasonable.
As far as best of the best oils go (obviously cost aside), IMO, Motul ester is the best, with RP and Kendal right behind. If you want documented data, analysis, and longevity backup, there are more than a few guys out there that can verify. I know of a few of my old Audi buddies that ran Motul for 15K (incl track days) on their turbo motors with no negative analytic results. Again, I wouldn't go that far, but it is possible without adversely affecting the motor.
At the end of the day, I don't think you can go wrong with Mobil, Valvoline, or Penzoline, especially if you plan to change frequently. Just make sure you stick with a weight that works best for your area of the country and driving habits. I would not mix, nor would I bounce around each change. The prices don't move all that much, but you should be able to pick one of the three that is a best compromise over time to be consistent. Good luck!