JET951

Hi,

here are the oil tests from an indipendant magazine in australia. it may be hard to read but this is as big as i can get it under the picture loading limit. if it is too small tell me and i will write it all out. very interesting results. just shows that just because it is expensive it is not always good.

JET951

here are some more

Miles965uk

Thanks for sharing. Very interesting write up indeed. Mobile 1 got a big slating here as well - there is a big name behind this oil with loads of auto manufactures recommending it as well.. is that for a PR stunt or is Mobile 1 actually better than other oils.... this magazine test seems to be unbaised.

I used to use that stuff but recently switched to Royal Purple and glad they liked it too.

911 2

miles who sells royal purple in the uk

Kevin

There are typically 2 major oil additives that oil companies use to increase the load bearing ratings of oil. One being Zinc which is restricted in Europe as a additive and chlorinated pariffin. The oils that are successful in these type of tests have higher levels of these additives..

I use Energy Release as a supplement to Mobil 1..

It must be noted that these 2 additives are harmful to human health and post the same cautions as one sees when fueling up there car with gasoline..

DonE

email them at rpinformation@royalpurple.com for dealer info

I buy mine from a distributor here in Atlanta for about $5.25 per qt and its delivered UPS to my door. Its a little cheaper by the gallon.

ttAmerica RoadsterAWD

Wow. this is the second time I hear about my oil being less than desireable. Check this out: https://rennlist.com/forums/993-turbo-forum/219935-scary-info-about-oils-and-cam-shaft-longevity.html

Jaime

ps the only thing I see missing on this study is test time. How long did they expose the various oils...obviously I hope they were all timed the same.

Red rooster

That has to be one of the most useful posts Ive seen for a while.Now on favorites!!!
I have Valvoline in my motor at the moment and was starting to think that Mobil 1 was the better choice for its spring oil change !Ah well . Back to Canadian tire to check on Valvoline product !!!!!!!!!!!!!!!!

Thanks very much for that.

Geoff

Miles965uk

Cant remember who it was but just do a seach, I think I bought it online anyway...

911 2

miles which grade are you running is it the racing 51

thomas.rousseau

Couldn't figure out if the oil was hot or cold during the test???

/Thomas

JET951

im thinking cold.

ebaker

This test may have little to do with real world engine wear. It is an important test if you have a flat tappet cam with heavy valve springs. The new SM rated oils are limited to 800ppm ZDP (zinc/phosphorus) additive because it may damage catalytic convertors in an engine that burns some oil. Most diesel rated oils have about 1300 ppm zdp. If you want to add ZDP to your oil, GM Engine Oil Suppliment (EOS) has 6500 ppm ZDP. It's available at GM dealers.

Red rooster

ebaker,
As you will see I am not a lube engineer !!!!!!!!! I am puzzled that you say that the results are not a reflection of real world engine wear , followed by information on GM product to give an oil better wear properties.
Kevin is adding stuff to a pretty expensive oil!!!???? that was crap in this test .

What tests should we be looking at to find the best oil for our buck ??

Geoff

ebaker

It's possible the Australian Mobil 1 0w40 is different from the US version.
This test measures extreme pressure steel on steel wear in an overload situation. It might reflect wear seen on valve stem tips or on a flat tappet cam in a non OHC engine or on a ring and pinion. Oils with a lot of extreme pressure additives do well in this test. There are many other oil tests such as piston skirt scruffing, ring/bore wear, piston deposits, bearing wear, anti oxidant capacity, acid neutrilazition capacity, viscosity stability, evaporation loss at high temperatures, etc.
About a year ago Mobil changed the 0w40 to meet the SM specification. The ZDP was reduced from about 1100 ppm to 800 ppm. The new version may have other improvements to compensate for the reduced ZDP though.
The new Mobil "EP" oils and the 5w40 Truck and SUV have too much ZDP to be SM rated. IMO they are excellent reasonably priced oils you can find at the local auto parts store. Any synthetic 5w40 diesel oil, such as Rotella, would be a good choice. Redline is considered by many to be the best but it's expensive and hard to find. It has LOTS of moly and lots of expensive ester base oils. Royal Purple is available at PepBoys also.
I'm no expert, I just enjoy reading about this stuff.