A Mechanic's Life - Tales From Under the Hood

3515 messages,  Last post on Jun 18, 2013 at 2:06 PM

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     This topic is primarily for professional mechanics, current or retired, or ardent amateurs who would like to share the suprises, victories, tricks and challenges of working on the modern automobile. All Forums members are invited, of course, to ask technicians about their work, or comment on your own experiences dealing with mechanics.
 
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#975 of 3515 Re: Here's another "expert" trying to give advice to consumers. [steve_] by thecardoc3

Jan 26, 2013 (2:42 pm)

Replying to: Stever@Edmunds (Jan 26, 2013 2:03 pm)
Now for anyone who doesn't understand Steve's attempt at humor, dexos is GM's current oil specification, API SN and ILSAC GF5 fall short of it's requirements. If the green dexos label isn't on the front of the bottle, then it does not meet GM's specification, period. There is a forum here on oil and in one of them specifically there are numerous complaints about oil consumption on certain GM engines. One of the contributing factors for those complaints is that when someone services those cars with a product that fails to meet GM's specs, you end up with deposits forming in the piston ring lands and that contributes to the elevated oil consumption that is being reported. GM's specs also require a much lower volatility than API and ILSAC, and we haven't even touched on the emission systems requirements for the oil.

#976 of 3515 Re: Here's another "expert" trying to give advice to consumers. [thecardoc3] by Mr_Shiftright HOST

Jan 26, 2013 (3:05 pm)

Replying to: thecardoc3 (Jan 26, 2013 2:42 pm)
I also thought the statement in that article that if you used the wrong viscosity, "the engine's metal parts will rub together" was kind of funny.
 
If an engine's metal parts rub together, they do that for about 10 seconds!

#977 of 3515 Re: Oil [imidazol97] by thecardoc3

Jan 26, 2013 (3:42 pm)

Replying to: imidazol97 (Jan 26, 2013 2:14 pm)
What's the professional opinion on MotorKote
 
It's a tangeled track to the answer, but they quote the use of "The Falex-Timken Lubricity Test". Not to be confused with the "Flex-Timken" test.
 
Here is Mobile 1's answer about another oil that addresses a question on the subject.
 
http://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/Oil_Film_Strength- .aspx
 
That link came from a thread from "Bob is the oil guy"
 
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2312175
 
To sum it up, that bearing test is something that would apply to extreme pressure lubricants, not engine oils. So that means MotorKote likely overdoses ZDDP which means it would ruin o2 sensors and catalytic convertors if used in OBDII gasoline engines.
 
GM, Ford, Chrysler, Toyota, Honda and just about everyone else warn against the use of additives and make no exceptions about being ready to void warranties if they are used.

#979 of 3515 Re: I'll need more time to read this article [thecardoc3] by Stever@Edmunds HOST

Jan 26, 2013 (4:17 pm)

Replying to: thecardoc3 (Jan 26, 2013 4:04 pm)
Funny, I just read The Machine Stops online last night.

#980 of 3515 Re: I'll need more time to read this article [steve_] by explorerx4

Jan 26, 2013 (5:17 pm)

Replying to: Stever@Edmunds (Jan 26, 2013 4:17 pm)
It's going to take me a few readings to get through it, but I did notice one interesting thing I missed the first time, 1909.

#981 of 3515 Re: I'll need more time to read this article [thecardoc3] by Mr_Shiftright HOST

Jan 26, 2013 (6:11 pm)

Replying to: thecardoc3 (Jan 26, 2013 4:04 pm)
Oh "futurists"---often wrong, but never in doubt.
 
Remember flying cars?
The end of libraries?
Men on mars?
War will become impossible?
Home robots?

#982 of 3515 Re: I'll need more time to read this article [Mr_Shiftright] by Stever@Edmunds HOST

Jan 26, 2013 (6:50 pm)

Replying to: Mr_Shiftright (Jan 26, 2013 6:11 pm)
Terrafugia, net/Kindles & the Roomba.
 
3 out of 5?

#983 of 3515 Re: I'll need more time to read this article [steve_] by texases

Jan 26, 2013 (7:03 pm)

Replying to: Stever@Edmunds (Jan 26, 2013 6:50 pm)
No practical flying cars yet. Thank goodness! Texting + flying, oh my!

#984 of 3515 Re: I'll need more time to read this article [steve_] by Mr_Shiftright HOST

Jan 26, 2013 (7:55 pm)

Replying to: Stever@Edmunds (Jan 26, 2013 6:50 pm)
Absurd useless laughable piles of junk.
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