synthetic motor oil : Anyone using PENNZOIL Platinum for their PRIUS ?

<div class='quotetop'>QUOTE(smokey1 @ Jun 23 2007, 12:09 PM) [snapback]466880[/snapback]</div>

I'm not using it yet. But with the stash I have I will be using it. Not much help to your question, but I will post when I have some results.

 

I don't use any Pennzoil product and never will. Why? My first vehicle was a S-10 Jimmy with a 2.8L V-6. The previous owner, who we knew, religiously had the oil changed with Pennzoil every 3000 miles. When we rebuilt the engine at 110K miles due to a rear main seal failure the engine had so much sludge that the entire valve area was filled! There was only tiny passages through the sludge to the drains and around the valves. No one in my family has used a Pennzoil product since.

My father, a certified mechanic swears by Quaker State. For the diesel fleet he maintained he swore by Shell Rotella T Full Synthetic and changed it every 25,000 miles. I use it in my VW TDI and change it at the factory recommended 10K miles. I've been impressed with Castrol since using it in my motorcycles and having my FJ1200 go 75000 miles before I totaled it in a high-side on a wet road.

If you are changing on the factory recommended 5K interval there is no need for synthetic oil. I guess you could use it if you are looking to get that last 0.5% of power or get another 1% mpg through reduced friction. If you are intending to extend the life of your engine your just spending for money.