Thread: Royal Purple?

It really depends on the application. One oil can be horrible in one type of engine, and great in another. RP is generally good stuff, but also an overpriced niche oil. How much of a price difference is there between Mobil and it? Quaker State is one of the poorer synthetics...

Have you ever given the Penzoil's a try? The Penzoil Platinum is really good stuff on par or better than the M1, and the 5 quart jugs are on clearance for ~$19 or so at you local Walmart to make room for the new Penzoil Ultra. Incidentally, the Penzoil Ultra is some really good stuff and better than the RP, M1, or QS, and it's roughly $25 for a 5 quart jug.

What sort of mileage/driving style does your GC encounter? How often do you change it?

I use RP 5-20 it's perfect.

I do all my changes by the book, every few months or when the KM's reach the sticker on my window (which so far has never happened). It's my dd that gets a lot of start and stop but not generally a ton of KM's.

shell 5-20 syn ,, its whats in the book

Originally Posted by coupegirl

shell 5-20 syn ,, its whats in the book

Down here they use a 5-20 blend

@coupegirl
your book says Shell? Mine says QuakerState.

I couldn't justify 3 times the cost for Royal Purple, so I just went with Mobil1

Originally Posted by snoopy0812

@coupegirl
your book says Shell? Mine says QuakerState.

I couldn't justify 3 times the cost for Royal Purple, so I just went with Mobil1

WOW Mobil 1 is about the same price as RP down here

6 litres of Mobil1 = $24.00
6 litres of RP = $76.00

what about for you?

Originally Posted by snoopy0812

6 litres of Mobil1 = $24.00
6 litres of RP = $76.00

what about for you?

Quart Mobil1 $7.50
Quart RP $7.95