Shingles

this is the email I got from them:
"
Shing:

The flash test we use is the D 92 method, which is the Cleveland Open Cup. The flash point listed on the spec sheet for Mobil 1 would be for an unused oil. Once used in a gas engine, the flash point will run lower. We usually find used gas engine oil samples flash off at 365 to 390 F. If the Mobil product, in particular, flashes off higher than this, we haven't noticed it. Some syn products tend to flash higher than a comparable petroleum product.

We report viscosity on the SUS scale at 210 F. The spec sheet for the Mobil product uses cSt and the 100 C scale would be appropriate for an engine oil. There is a direct crossover between cSt and SUS. We get the cSt number and mathematically convert it to SUS, which is the scale we prefer. On our report line above the viscosity result there is a "values should be" line which gives you the correct range for your used oil on the scale we use. This line is to avoid confusion.

We see some excellent results for most clients using the Mobil 1 and other syn oils. As an independent lab, we don't support any particular products, nor do we complain about any of them. If oils are sold commercially and carry the API seal, they are alright with us.

We are looking forward to working with you in the future.
Jim Stark

Keven97SE

that the Mobil 1 5W30 still held up pretty well after all those miles and could maybe stand even more...I'm sending in my Amsoil 5W30 sample after I hit the 7500 mile mark...I'm over 4000 now, so in about 1.5 months I should be reaching that point. I'll let everyone know my results as well.

You have the oxidation results, too, right? I don't remember seeing it listed in your post, but I imagine that's the basis Blackstone Lab uses to determine whether the oil's still got some life left...right? FYI I'll be going thru the Blackstone also, so we'll have some apples to apples comparision data.

Jeff92se

iTrader: (82)

what about the amount of metals and maybe antifreeze? Is there a test to determine how much additives are still left in the oil? How exactly are you determining if the oil is still "good" or not?? Bring me up to speed guys

Shingles

http://users.ev1.net/~shinglin/cars/oil/oilrpt.html

There is actually a determination on how much, in %, of antifreeze is in the oil. To me, I am basing that the oil is still good by the fact that there is lower than average junk stuff and still has high ammounts of additives.

-Shing

Sprint

iTrader: (10)

thanks

Chris91SE

iTrader: (1)

not you too

Mike S.

Isn't Private Msg is for? Thats what clee told me anyway.

Mike S.