Well Andy, Yes, I'm slightly defensive when someone makes a statement that is totally off the wall without proof. In your above reply you're stating its to do with the group type of oil not the base oil or td and such. Please let me point out the Group type of an oil is the refference to what type of base oil they are using. So, several things come to mind, but main thing is how are you able to determine which group stock base oil is being used in each brand of oil?
2nd, back to schaeffers, I understand your reluctance to using a product based on your limited knowledge and experience with their products and based on that, I believe you should refrain from suggesting that it is not advisable to use this oil unless you do one of two things, either back up your statement with proof of where schaeffers may have been used and shown exactly what you're saying AND OR, you add in your statement that
In My Opinion based on what I know, I'd not xxxxx etc..... This would at least qualify your statement as such instead of trying to make factual statements which can be mis leading to some. Had that been stated in that manner, I would have never opened my mouth as I do believe people should share their opinion/ experiences as long as it's qualified and others know this. Shareing your knowledge is great but becarefull on how you express such as when it comes to comments about schaeffers as I'm sure other statements about amsoil and mobil among others, also will challenge it as I have when stated as a point of fact.
If you want only a full synth, yes schaeffers has a full 5w30 synth, and from what Al has seemed to experience, it is proven out every bit of his expectations.
As for your logical assumption about not using the blend, I respect your decission but also please clarify your statements as opinion unless you can or are willing to show fact and based on your information, your assuming schaeffers dino base oil is going to burn off like any other conventional oil.[/b]This statement is incorrect[/b]
From your statements, it sounds like you haven't taken the time to read and digest the basics about the different types of group base oil. Reason, if you do, you'll find that the some base oils can burn off easier, then there are some that are a lot closer to a full synth when it comes to burn off. Interesting enough, if you don't use a TD sheet, then obviously it would be very difficult to see this but even when you do, there's a lot of other factors that cannot be factor'd in as other things not available do affect this as well. There is different refining methods that are used and this method clearly makes a difference in how a base stock will react to heat and cold among other things. The performance of a base stock oil also is widely affected by the blending process of the additives and this can either reduce or increase flashpoints of a base stock therefore mis leading you to assume the type of base stock used. Also, I have seen many Tech Data sheets be incorrect many times, even schaeffers has incorrect data at times on the internet.
One last thing, base stock is a building block of an oil, it is what an oil company would use to start the process of blending, and as pointed out above, many things affects the base stocks ability in different ways. So, to qualify dino oils, you have
code:
NAPHTHENIC NAPH/PARAF MIX 100%PURE PAO
(often called- paraffin
paraffin)
.
Unsaturated or Mix of open Saturated or Saturated or
open molecule +closed molecules closed molecule closed molecule
.
Low VI Intermed.VI High VI High VI
these are natural VI's without polymer additives to boost
the VI artificially.VI's change within the base
oils dependant of the degree of purity based
on the refinement process used.
.
Flash Points
350-370deg 410deg 475-500degs 495-525degs
.
.
Many, if not most, oil companies use naphthenic
-paraffinic mix, but call it paraffinic. It is
legal to contain some naphthenic and still call
it paraffinic.
.
.
Oftentimes the flash point shown on TD sheets
gives an indication of what base oil is used but
with additives used in the mix, it will not show
the base oils actual flashpoint as the additives
will affect the flashpoint which is misleading.
As you can see in this little chart, that there are different dino oil base stocks, and to classify all dino oils together, is incorrect. In schaeffers case, they use a mix of the 100%pure paraffin base which is like the PAO synth both have Saturated or closed molecules both of which give a near simular flashpoint and high VI's.
Also, In respect to film thickness, the naph base oils have a film thickness of .2- .3.35 micron where the pur and pao has .4-.5 micron.
[ May 06, 2003, 09:31 AM: Message edited by: BOBISTHEOILGUY ]
