Oil tests

[RugbyPete]

Some more oils tests, interesting bedtime reading

http://neptune.spacebears.com/cars/stories/mobil1.html

http://neptune.spacebears.com/cars/stories/amsoil.html

[Wouter]

Mobil 1 currently enjoys the distinction of being the only readily available true PAO synthetic motor oil.

It's been while since I owned a bottle of this stuff, but.

If I remeber correctly Mobile1 is not Full Synthetic, the base oil is, but the adatives are mineral.

No thanks I will stay with Good old Amsoil.

[RugbyPete]

Yeah, I'm going Amsoil or Silkolene next if I have the money, otherwise I'll go Havoline again. The only concern is if Amsoil still claim the highest amount of zinc content. Whilst good for longevity, the high content can cause deposits on valves etc.

This post is mainly for a read, some people like constant fact gathering

Here's some more facts of a whole range. Ideal for those who dont wish to spend mega bucks but want to know how their budget or medium quality oil is doing in comparison to the top guns

http://www.vwtrendsweb.com/tech/0304vwt_synthetic_oils/

And a great post on additives:

"The question is far too large for a single answer. Of the ones listed, the top picks would be the Redline or the Amsoil. But they are totally different oils. The Redline claim to fame is the abundance of moly in a 50% prox, ester basestock with the balance a POA. The moly is in the oil at the tune of around 680 PPMs. If you will be running her hard, as in driving it like you stole it- here's yer oil. If you want a good oil with a solid foundation and a large add pack, Amsoil would be the pick but it is not API certified for their best products which could effect your Ford warranty. Skip the XL7500 oil as it is an over priced Gp III that can had anywhere for far less money. Another option for you, chose a dino oil that has a lot of moly in it. Havoline and Pennzoil will have around 2/3s the content of Redline. Both are using a blend of basestocks but the largest % is a Gp II+ which is the same technology as a Gp III synthetic but doesn't quite have the Viscosity Index of a Gp III. It should hold up well for the 5000 mile OCI even if the engine sees an occasional 100% throttle run. None of these oils will, for average driving, make your engine last one mile farther. If you intend to drive it hard, the Redline will make it last a few miles longer but it is no replacement for sanity.
Your mileage may vary.

FWIW, moly that is the key to some of the oils today is better known as molybdenum trialkyldithocarbamate or MoTDC. It is a clear liquid, not to be confused with moly disulphide of the 1960s which was a solid lube, black in color and ended up clogging the oil filter. The MoTDC is a anti- oxidant, oxidation inhibitor, anti-wear and extreme pressure, metal deactivator, and a friction modifier or friction reducing agent. It is a good additive to have in any oil. For my personal engines, it is a requirement to be in the oil. Moly is especially important when things get real hot and the engine is being subject to the boundary lube state. Boundary lube state is when the engine surfaces are so hot that the oil literally runs off of the parts providing zero lubrication. The additives then come into play and the add pack provides the lubrication. For many years the ZDDP provided this but since the levels have been reduced, a different type of additive is being used. This is why I like the moly in my oils because you never know when you may have to drive your engine harder than normal and stopping for an oil change to get the right add pack for that situation is not an option."

[RugbyPete]

I love adverts:
http://www.texaco.com/yourcar/depositshield/ads/shieldinside.wmv
http://www.texaco.com/yourcar/depositshield/ads/assemblyline.wmv

[stuartturbo]

A while ago jag spec 5w20 or 5w30 for there V8 so we'd carry out full testing on them oils and found dealer would use a "better" syth oil, Castrol 10w60 or 0w60.
And when just looking a wear of an oil pump the castrol showed the most amount of wear compared to a std oil.

[RugbyPete]

Some more tests by individuals

http://www.planetsoarer.com/OilAnalysis/OilAnalysis.htm