Royal purple XPR 10w40 question

[941MXVET]

Originally Posted by Daniel R

I would really like to understand the difference between oil weights, benefits and drawbacks.
All info welcome, just please no oil wars!

Daniel

Daniel,

If you'er interested in learning about the different properties of oils, and various lubes, check out 'Bob is the oil guy.com' http://www.bobistheoilguy.com/forums/ubbthreads.php


Lots of good info, sure there's some B.S. too, but one can usually figure it out!

From what I understand group 5 base oils (polyoester) was developed and patented by Dow Chemical. Since they still hold the patent (IIRC) group 5 oils such as Red Line and some Motul lines cost quite a bit more. I don't mind paying up for it, but that's just me.

[lizBox]

Quote:

"Go to your local Wal Mart, buy the 5 quart containers of Castrol Syntec 10W-40, a better oil and sells for about $23 per 5qt container, and no shipping............"

Originally Posted by JFP in PA

We have 5 wal-marts in my town and none sell Syntec 10w-40 in the 5 qt jugs. Only 5w-30. Also went searching to many napas, auto zones and advanced auto parts. Same story.

Finally an auto zone guy offered to sell me the 10w-40 qt containers at the same price as the 5w-30 jugs ($28.99). Worked out to be $5.80/qt. More than I wanted to pay but cheaper then the $7.49/qt

Changed the oil and washed the Boxster today and took her for the first ride since Halloween. Seems so much faster now.