You are deeply mistaken. I will agree with you that RP is not the best 'bang for buck,' so to speak, but if you're willing to fork over the extra Benjamins, you're in for one of the highest quality lubricants in the market.

Laugh.

so where's the facts about royal purple....instead of arguing...just post up some info on it....lol

oil is a sensitive topic.....

^^ I agree.

To keep this Z related...UOA on Z's...

VQ Oil Analysis and Info - MY350Z.COM Forums

Copy and Paste..

Originally Posted by Resolute View Post
Here's a comparison chart I've made to highlight oils whose results, when averaged according to engine wear for every 1000 miles of use, stand out as a significant statistical difference from the mean. I divided the engine wear for each metal by the mileage for each and every UOA I have, and then multiplied that by 1000 to generate a ppm for every 1000 miles driven. I then found the average for each wear metal (iron, copper, etc..) for all the UOA results and the standard deviation of each wear metal result from the average. This chart shows the average wear for each current oil tested in terms of ppm/1000 miles. The cells with a green background are better than one standard deviation from the average. The cells with a red background are worse than one standard deviation from the average. The average and SD, remember, is calculated from ALL the samples I have from the VQ. The average wear characteristics of some oils used in the VQ which are no longer in production I have also included in a separate table.

The interesting thing is to note which oils are statistically significant in terms of better or worse wear from the universal average for each wear metal. It would be nice to have multiple samples from some of these oils before the manufacturer changes formulas again.

http://i265.photobucket.com/albums/i...Comparison.jpg

just stick with what you like and don't rub it onto other ppl.....this thread is turning into a religious ppl trying to convince you to convert thread...lol


the point of the thread is for the guy to change his oil ASAP b/c he has sludge in there....done

Castrol Syntec 0W-30/5W-30 did good from that chart

Castrol makes good quality oils. Especially the German Castrol.

i've been using it for awhile..... i used regular Castrol on one car to see how long it lasts.....25K til white foamy stuff starts coming...lol

NO PERSONAL ATTACKS!:mad: If you dont' agree with someone, simply reply WITHOUT attacking or harassing the person or just ignore it. You can also keep things pm.

results from
http://www.blackstone-labs.com
http://www.dysonanalysis.com/index.html

all cars were 350z's

All the data collected together


http://i422.photobucket.com/albums/p...ame007/UOA.jpg

http://i422.photobucket.com/albums/p...me007/UOA2.jpg

http://i422.photobucket.com/albums/p...me007/UOA3.jpg

results from a 08 G37 with Nissan's 5W-30

http://img16.imageshack.us/img16/3263/oil1.jpg



and results from same car at 2nd oil change...same oil too

http://img16.imageshack.us/img16/4067/oil2r.jpg

Your kidding?! If not.... :bowrofl: