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Thread: Synthetic Oils???
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02-03-2008, 03:44 PM #1
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Navy Blue Metallic- 1999 Z28 M6 40,000 Miles
Synthetic Oils???
I've been running Mobil 1 in the motor since 3000 miles and am considering changing the rear end and gear box over to synthetic as well; just curious if anyone has noticed differences in either mileage or performance after their change over in the rear or gear box. And if so, what brand did you switch to, Mobil, Royal Purple or others.
If this has been addressed, please email the threads.
Thanks in Advance!Last edited by GraigZ28; 02-03-2008 at 03:55 PM.
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02-03-2008, 03:45 PM #2
+1.
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02-03-2008, 04:02 PM #3
I run Amsoil for the last 3 or 5 years in the rear. No problems.
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02-04-2008, 09:34 AM #4
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I just run regular ATF in my t56. Places like six speed inc. that rebuild the T56 trans recommend not using syncromesh type stuff.
Also, Mobil 1 is overpriced garbage that is not fully synthetic. Run Penzoil Platinum instead. Its cheaper and fully synthetic.
hey we both have '99 NBM Z28 M6!!
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02-04-2008, 09:44 AM #5
Castrol Synth... that what i run!
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02-07-2008, 04:39 AM #6
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Navy Blue Metallic- 1999 Z28 M6 40,000 Miles
Anyone else have input...
on the synthetic oils in the M6 or rear end?
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02-07-2008, 05:16 AM #7
Just as a note for someone that thinks synthetic is total b.s and is over priced. I use to ask alot of questions to see if it really was better or not, but never got a full explenation.
I worked on a professional drag boat team for 6 years now. We run 500CI keith black Hemi engines and we put down between 7000-8000 HP. We always run Kendel Nitro 70 weight oil with a TFX additive for protection. Our motors turn around 8000RPM at topend of the track. This past year we started upgrading the motor, Raised the compression and added some more boost and we started killin our bearings in the crank. After one 1/4 mile pass the crank bearings started turning blue and blacking the crank. So we switched to a full synthetic oil (Centergon) and I could not believe my eyes. The bearings after a pass looked brand new. Not one scratch or mark, and didnt change colors. So we figured out the Kendel oil was breaking down and the synethic was not. So to me that was proof that synethic is a better oil under a high heat load.
I have run synthetic ever since in everything!!
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02-07-2008, 05:27 AM #8
what weight mobil1 do you use?
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02-07-2008, 10:25 AM #9
+1 for Penzoil Platinum
I use to run mobile one also, but then I read that Penzoil Platinum has a better shearing rate for an ls1. Check the oil analysis
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02-08-2008, 03:48 AM #10
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02-08-2008, 04:06 AM #11
stay away from mobil 1. it is good oil but there is so much better out there, like pennzoil platinum and amsoil. royal purple is crap too imho
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02-08-2008, 05:41 AM #12
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02-08-2008, 05:43 AM #13
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Torco conventional gear oils return a much lower wear and higher performance in most GM muscle car applications than any synthetic. But whatever gear oils you use just change it our at least once a year or 20K miles. So many run gear oil that has totally depleted their ad packs miles ago.
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05-02-2008, 04:30 PM #14
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05-02-2008, 05:19 PM #15
Castrol Syntec in the motor.
2002 Sunset Orange TransAm 6 spd.
http://www.mustangmods.com/data/1327/dadsigpic2.jpg
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05-02-2008, 05:57 PM #16
penzoil platimun synthetic 5w-30 always..... sometimes they have it on sale at pepboys for like 25 bucks for 5 qts plus the filter.
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05-03-2008, 09:56 AM #17
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05-05-2008, 07:43 AM #18
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PEWTER- 2000 CAMARO SS #3821
The term "full synthetic" is not true. I don't think any off the shelf oil is "full" anymore. Amsoil may still be totally synthetic but most others start out from a mineral base as Sarge has stated in his many oil forums. Does not mean the oils are bad, just not "full" synthetic. Many lawsuits won and lost over the termanology of what the manufacturers sell.
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05-05-2008, 11:16 AM #19
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PEWTER- 2001 TRANS AM WS6
PP for the oil ,regs on the atf (says not to go synthetic) and diff is syn from the factory
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05-05-2008, 06:36 PM #20
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1999 Formula WS6 M6-sold- 2001 Silverado Z71
PP for oil means.....what? Sorry I'm not completely up on this board jargon yet
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