LS3 manual trans fluid change - less noise, etc? - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Stingr69 · 02-13-2010, 09:00 PM

I swapped my factory fill for 4 qts of Mobil 1 Synthetic ATF in my manual tranny today and the synchronizers are DEFINATELY liking it.

It was cold outside but the shifts were all improved. You can easily tell the synchros are doing thier job better now. I haven't noticed any downside to this change. If you want smoother shifts then installing this fluid it worth the trouble. I bought it at Pep Boys for about $7.50 a quart so the cost was very reasonable for the improvement you get.

As was stated before - do not get the Dexron VI version. You want the multiple vehicle formula. The label on the bottle is a bit confusing but if you stay away from the Dexron IV you will be fine.

-Mark.

MEDISIN · 03-06-2010, 05:02 PM

After reading through this thread I decided to give the Mobil 1 ATF a try. Sure enough, there is a noticable difference in how the synchros engage, especially in and out of 2nd. A touch quieter too! I drained out 3.4 quarts of factory fluid and replaced with approximately 3.7 quarts of Mobil 1 ATF ($6.49/qt). I took someone elses advice and used 4ft of 1/2" tubing and funnel to refill from the engine bay. Just snaked the tubing down by the break fluid reservoir and stuck the tube 3" into the "fill" port. Couldn't be easier. Whole process was faster than changing the oil and made a difference you can feel, especially in cooler weather.

lakersftbl69 · 03-13-2010, 12:36 AM

for the mobil 1 do i need to buy any additive for it or no?

Stingr69 · 03-13-2010, 02:22 PM

Quote:

Originally Posted by lakersftbl69

for the mobil 1 do i need to buy any additive for it or no?

Nope, no additives in the tranny.

-Mark.

presholt33 · 03-14-2010, 06:56 PM

how about the diff if you use mobil-1 do you need to put the add in

Russell James · 03-14-2010, 07:05 PM

If the gear lube you use says on the bottle that it contains limited slip additives, then you don't have to add any more. I used Royal Purple in the diff and it already has limited slip stuff in it. Make sure to use the correct weight rating. I used RP 75w90 Max Gear.

I put Royal Purple Synchromax in my trans - best stuff I have ever used in a Tremec, it shifts like butter now. Pricey though, 17 bucks a qt, but well worth it.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Can't Decide - Auto or Manual	attymf	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	213	02-22-2022 08:48 PM
Noise at 3000RPM 6 speed Manual	Unique Auto Depot	Mechanical Maintenance: Break-in / Oil & Fluids / Servicing	1	01-09-2010 04:30 PM
Sealed Transmission?? Transmission fluid doesn't need change until 150k miles?	DevilKnightFalcon	Mechanical Maintenance: Break-in / Oil & Fluids / Servicing	34	12-07-2009 07:32 PM
LS3 Specs revealed: GM's 436hp Sick 6.2L LS3	TAG UR IT	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	28	07-30-2009 07:02 PM
LS3 + Manual = New Gears?	ZZcamaro	V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6)	17	03-16-2009 07:55 AM

02-13-2010, 09:00 PM	#29
Stingr69 '69 Owned Since '79 Drives: '69 Z/28 LeMans Blue w/White Join Date: Oct 2008 Location: LR AR Posts: 1,848 View My Garage	I swapped my factory fill for 4 qts of Mobil 1 Synthetic ATF in my manual tranny today and the synchronizers are DEFINATELY liking it. It was cold outside but the shifts were all improved. You can easily tell the synchros are doing thier job better now. I haven't noticed any downside to this change. If you want smoother shifts then installing this fluid it worth the trouble. I bought it at Pep Boys for about $7.50 a quart so the cost was very reasonable for the improvement you get. As was stated before - do not get the Dexron VI version. You want the multiple vehicle formula. The label on the bottle is a bit confusing but if you stay away from the Dexron IV you will be fine. -Mark.

03-06-2010, 05:02 PM	#30
MEDISIN Drives: 2011 CTS-V Sedan Join Date: May 2009 Location: Chapel Hill, NC Posts: 1,505 View My Garage	After reading through this thread I decided to give the Mobil 1 ATF a try. Sure enough, there is a noticable difference in how the synchros engage, especially in and out of 2nd. A touch quieter too! I drained out 3.4 quarts of factory fluid and replaced with approximately 3.7 quarts of Mobil 1 ATF ($6.49/qt). I took someone elses advice and used 4ft of 1/2" tubing and funnel to refill from the engine bay. Just snaked the tubing down by the break fluid reservoir and stuck the tube 3" into the "fill" port. Couldn't be easier. Whole process was faster than changing the oil and made a difference you can feel, especially in cooler weather.

03-13-2010, 12:36 AM	#31
lakersftbl69 Drives: 2010 camaro ss Join Date: Mar 2009 Location: conway sc. Posts: 1,453 View My Garage	for the mobil 1 do i need to buy any additive for it or no?

03-14-2010, 06:56 PM	#33
presholt33 Account Suspended Drives: too numerous Join Date: Mar 2009 Location: WY Posts: 376 View My Garage	how about the diff if you use mobil-1 do you need to put the add in

03-14-2010, 07:05 PM	#34
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,482	If the gear lube you use says on the bottle that it contains limited slip additives, then you don't have to add any more. I used Royal Purple in the diff and it already has limited slip stuff in it. Make sure to use the correct weight rating. I used RP 75w90 Max Gear. I put Royal Purple Synchromax in my trans - best stuff I have ever used in a Tremec, it shifts like butter now. Pricey though, 17 bucks a qt, but well worth it.