Originally Posted By: StevieC
FWIW:
I forgot to mention... Where I live (on top of a mountain), I have to climb a mountain each day home from work. It's pretty steep and involves 4K RPM for about 3-4 Minutes to get me up there.
I also drive all day long (8-10 hours) with multiple restarts as well. I also sit in the occasional traffic jam for a couple hours.
I do this in our hot-humid summers and our brutally cold winters.
I have run Pennzoil Platinum during this time for 10K KM (6K Mile) OCI's when my manual calls for 6K KM (3500 Miles) OCI's under normal operating conditions.
My UOA's turn out just fine and my engine is spotless and runs like the day I bought it. I have over 170K KM (106K Miles) on it!
So you using Pennzoil Platinum and changing at 5K miles I'm sure would be more than fine and have really great protection!
No offense Stevie, but the Hamilton "mountain" is NOTHING compared to the passes out west. I've driven out west many times, including a drive from Toronto to Seattle (which took 4 days). Let me tell you... THOSE are mountains!!! I had a rental car (Chevy Impala) for that one trip, and the 3.5L V6 found itself struggling in 2nd gear to keep 70 mph through those passes.
I can drive up and down the Hamilton mountain all day long with my trailer hooked up and the car wouldn't even notice.