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The Skinny On GF-5 Oil

 
  #1  
Old 03-13-2008, 12:32 PM
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The Skinny On GF-5 Oil

Convenient one stop shopping, for the skinny on where the industry is on the upcomming GF-5 engine lubes.
http://www.gf-5.com

Interesting to note it includes a 0W-20 lube!!!!

Also I noticed they dropped the high temp wear test, from the sequence???? can't remember the number right now, but it was part of the GF-4 tests.
It was part of the high temp oxidation/deposit/evaporation/ect sequence. Seems like it went from a G to H sequence, or something like that, anyway it seems the wear test has been dropped for GF-5, so wonder whats up with that????

Can't find out if the wear portion has been moved to another sequence, or has a stand alone test all it's own, or has just been dropped!!!!

Is some yahhoo trying to run one by us, or what????
 
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Old 03-13-2008, 01:18 PM
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Great link! Thanks! Well it's good to see that it will be backward compatible. As it should be, of course. But I half expect that the emissions requirements will one day make previous oils so obsolete that the new oils are no longer compatible with our obsolete engines!
 
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Old 03-13-2008, 09:51 PM
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So what are the zinc and phosphorus levels?
 
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Old 03-13-2008, 10:21 PM
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Originally Posted by TallPaul
So what are the zinc and phosphorus levels?
Under "technical details", in the center, at present it reads that phos is unchanged from GF-4 levels, .06-.08.

Apparently Zn levels, or rather the ZDP phos retention levels, will be focused on & new methods for measuring phos retention will/are being developed, in order to improve & ensure measurable improvements in emissions systems protection.

There are a couple of links in the left sidebar, to discussions about the phos question, so apparently the GF-5 spec isn't completely nailed down yet as we speak, as some parts are still forming up,
So the link is a dynamic one & things are updated as they happen.
 
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Old 03-14-2008, 11:57 AM
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I think the 3.8L Buick pushrod V-6 that they used for wear testing is considered "obsolete". Diesel oil specification tests are running into the same problem. The Navistar 7.3 and GM 6.5 that were part of the test sequences have been out of production for quite a while now. Backward compatibility is not a priority, since car and truck makers have to worry about future warranty claims and really dont care about the engines they sold you twenty years ago. Junk it and buy a new one!

Jim
 
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Old 05-13-2008, 09:36 AM
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Finally found the reference to the change in the sequence lll-G to lll-H testing, where they drop the wear part of the lll-G sequence, when they rewrite the lll-H sequence testing.
LUBE REPORT: GF-5 Targeted for 2009Scroll down to New Engine Sequence Tests.

The article in Lube Report goes back to 06, but I haven't seen any reference to the high temp wear portion of the lll-G test being retained in the new lll-H rewrite.

Don't know if this was a typo error in the Lube Report article, or if they really do intend to omit the wear portion of the high temp test in the lll-H rewrite.

Don't know that I feel comfortable with them omitting the high temp wear portion of the test, as it seems to me it kinda tattles on a oils weak high temp film strength & barrier lube quality & quantity, so it seems to me, with engines running hotter & revving higher, we would need the high temp wear test to remain in the new sequence lll-H rewrite!!!!????
 
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Old 01-08-2010, 05:05 PM
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BUMP:

Well according to this ballot, the new GF-5 oil specifcation has been agreed to & licensing will begin this year, Oct 2010.

Of interest was the last sentence, which said as of Jan 1 2010, oil meeting GF-5 specs, could be sold under the GF-4 banner!!!!

So maybe we should begin to carefully look at the containers labeling, for a good deal on our spring oil changes lube recipe!!!!

Maybe we can find some GF-4 who's recipe is already upgraded to the new GF-5 spec, wthout having to wait until fall for the official branding!!!!
http://www.gf-5.com/uploads/File/News/111909ballot.pdf
 
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Old 03-13-2010, 10:00 PM
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Bump: Additional Infineum input.

Ran across this GF-5 knowledge wheel on the Infinum web site & thought I'd add it to the thread.
Infineum: Crankcase Specifications Development - GF-5

It has some interesting info with respect to moly & turbos!!!!
 
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Old 06-04-2010, 05:42 AM
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Originally Posted by horsepuller View Post
Great link! Thanks! Well it's good to see that it will be backward compatible. As it should be, of course. But I half expect that the emissions requirements will one day make previous oils so obsolete that the new oils are no longer compatible with our obsolete engines!

i am sure the aftermarket will step up liek it did with the zinc additive packages for musclecars.
 
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Old 09-11-2010, 01:07 PM
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Bump

Came upon this spider web graph of GF- 4 & 5 & GM's Dexos1, all on one graph, that more clearly shows the changes in each specification, so it's easier to look at & understand, than trying to translate the numbers.
SPIDER DIAGRAM
 
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Old 10-31-2010, 11:13 PM
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GM, who chaired the GF-5 comity, has chucked another cow paty at GF-5. They are beginning to sound like a two year old that didn't get it's way. I wonder who craped in their mess kit???!!!!
GM Lobs Volley at ILSAC/Oil
 
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Old 09-17-2012, 03:40 PM
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SN/GF-5 Test Parameters

Bump:

Ran across this SN/GF-5 test parameters chart & thought I'd add it to the thread for the record. These are the parameters with values that SN/GF-5 engine oil is tested to.
http://www.infineum.com/Documents/AP...ils%202010.pdf
 
 
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