Anyone have to add Friction Modifier with Redline Diff Oil? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Camarotobeornottobe · 08-30-2014, 09:58 AM

I hate the idea of having to keep throwing my car on the lift in a "trial and error" method of finding out how much friction modifier it needs when I change out the differential fluid. So much so, I'm tempted to just put the overpriced GM crap back in it.

I read that some folks needed friction modifier with both Royal Purple and Amsoil, despite that they allegedly have it already in their fluids. Seems to be inconsistent, which is exactly what I want to avoid.

I thought about just adding one ounce of FM on original change to be sure, but I've also read that adding the FM when not needed will cause the diff to not perform correctly.

Anyone have to add for the Redline 75w-90 (which supposedly has the FM in it already)? Thanks in advance -- I know this subject is an old one.

Pace · 08-30-2014, 12:00 PM

http://www.camaro5.com/forums/showthread.php?t=366524

Be careful with that. I would reach out to one of the trusted tuners or vendors. That's my game plan next time.

USMUCL · 08-30-2014, 12:30 PM

Mine is a 2014 SS with 6M. Forgot to mention that.

I think what you experienced is not still an issue for my year. I think . . .

So I'm subscribed to see what everyone reports on Redline ...

GONIF · 08-30-2014, 01:23 PM

Quote:

Originally Posted by USMUCL

Mine is a 2014 SS with 6M. Forgot to mention that.

I think what you experienced is not still an issue for my year. I think . . .

You get the Redline with the FM in it . You will not need any addional FM . Just done mine . REDLINE SAE 75W90 API GL-5 HYPOID GEAR OIL
LABLE ON BACK OF BOTTLE SAYS CONTAINS ADDITIVE FOR LIMITED SLIP DIFFERENTIALS.

Indydriver · 08-30-2014, 07:00 PM

OK, I'm reading all these threads about early diff service. I get early engine oil changes, not so sure about manual trans and diff. Owners manual says 45,000 for the diff in 2014 and that the GM fluid requires FM. What's the argument for such early changes? Why deviate from the OE recommended fluid/interval? I am asking about street only usage.

USMUCL · 08-30-2014, 07:43 PM

Quote:

Originally Posted by GONIF

You get the Redline with the FM in it . You will not need any addional FM . Just done mine . REDLINE SAE 75W90 API GL-5 HYPOID GEAR OIL
LABLE ON BACK OF BOTTLE SAYS CONTAINS ADDITIVE FOR LIMITED SLIP DIFFERENTIALS.

I'm curious like the OP, you didn't notice any additional noise? Several of the big brands, including Redline, Royal Purple, and Amsoil, say they already have the FM, yet folks report noise when they don't add the additional stuff.

Any positive changes in driving characteristics, like did you notice driveline engagement being smoother or quieter?

Quote:

Originally Posted by Indydriver

OK, I'm reading all these threads about early diff service. I get early engine oil changes, not so sure about manual trans and diff. Owners manual says 45,000 for the diff in 2014 and that the GM fluid requires FM. What's the argument for such early changes? Why deviate from the OE recommended fluid/interval? I am asking about street only usage.

You'll get a 1000 different answers. Bottom line, Some want to get the break-in crap out. Can't hurt anything but the wallet . . . unless you get this friction modifier thing wrong.

Indydriver · 08-30-2014, 09:06 PM

Quote:

Originally Posted by USMUCL

You'll get a 1000 different answers. Bottom line, Some want to get the break-in crap out. Can't hurt anything but the wallet . . . unless you get this friction modifier thing wrong.

Yup. I will probably do it early but let the dealer service it while in for one of the included oil changes. I'm at 4500 miles. It shifts and runs great. No complaints so far.

Avenging Orange · 08-31-2014, 12:51 AM

God, I love my non synthetic fluids! Don't have these worries.

Jrichards73 · 08-31-2014, 02:18 AM

My rear is a 3.91 rear in an auto with 15k on it (the car has 26k), filled with royal purple and half a bottle of GM friction modifier with zero issues.

c-57d · 08-31-2014, 10:22 AM

2014 2SS/RS M6 here. Changed the diff fluid @ <>1K miles with Amsoil and ½ bottle of the Amsoil FM.
No chatter, no problems.
My 2¢

Chevrolade · 08-31-2014, 10:35 AM

I just got me a new diff going with Lucas 75/90 no additive needed

Camarotobeornottobe · 08-31-2014, 01:57 PM

LOL, I guess I'll just throw the Redline or Amsoil in with an ounce or two of extra modifier and hope for the best. WTF, LOL

Andy-AMSOIL · 08-31-2014, 02:03 PM

Let me help clear things up.. adding a little modifier is not going to hurt anything. . Not having enough will cause the diff to chatter.
So don't get hung up on the fact that you may be adding some.

My recommendation is that you add half tube to the rear diff.. this assuming you get the amsoil

Avenging Orange · 08-31-2014, 09:49 PM

Quote:

Originally Posted by Chevrolade

I just got me a new diff going with Lucas 75/90 no additive needed

08-30-2014, 09:58 AM	#1
Camarotobeornottobe Drives: 1LE Join Date: Feb 2013 Location: East Coast Man Posts: 550	Anyone have to add Friction Modifier with Redline Diff Oil? I hate the idea of having to keep throwing my car on the lift in a "trial and error" method of finding out how much friction modifier it needs when I change out the differential fluid. So much so, I'm tempted to just put the overpriced GM crap back in it. I read that some folks needed friction modifier with both Royal Purple and Amsoil, despite that they allegedly have it already in their fluids. Seems to be inconsistent, which is exactly what I want to avoid. I thought about just adding one ounce of FM on original change to be sure, but I've also read that adding the FM when not needed will cause the diff to not perform correctly. Anyone have to add for the Redline 75w-90 (which supposedly has the FM in it already)? Thanks in advance -- I know this subject is an old one.

08-30-2014, 12:00 PM	#2
Pace Lifestyle = Deathstyle Drives: 11 SIM 2SS/RS Join Date: Mar 2010 Location: Long Island, NY Posts: 686	http://www.camaro5.com/forums/showthread.php?t=366524 Be careful with that. I would reach out to one of the trusted tuners or vendors. That's my game plan next time. __________________ 11 2SS/RS

08-30-2014, 12:30 PM	#3
USMUCL Drives: 2021 Camaro 1SS 1LE Join Date: Aug 2014 Location: Virginia Posts: 406	Mine is a 2014 SS with 6M. Forgot to mention that. I think what you experienced is not still an issue for my year. I think . . . So I'm subscribed to see what everyone reports on Redline ... Last edited by USMUCL; 08-30-2014 at 08:07 PM.

08-30-2014, 07:00 PM	#5
Indydriver Drives: '14 2SS/RS Vert 6M/KTU/NPP/DTA/ARH Join Date: Jan 2014 Location: Indianapolis Posts: 2,826	OK, I'm reading all these threads about early diff service. I get early engine oil changes, not so sure about manual trans and diff. Owners manual says 45,000 for the diff in 2014 and that the GM fluid requires FM. What's the argument for such early changes? Why deviate from the OE recommended fluid/interval? I am asking about street only usage. __________________ Consensus is, by definition, a lack of leadership. Last edited by Indydriver; 08-30-2014 at 07:35 PM.

08-31-2014, 12:51 AM	#8
Avenging Orange Drives: 2010 Inferno Orange 2SS/RS Join Date: Apr 2010 Location: Clermont, IN Posts: 3,297	God, I love my non synthetic fluids! Don't have these worries. __________________ 2010 Inferno Orange 2SS/RS M6 Black Leather, Sun Roof, OBX Headers, Borla touring axle back, Cold Air Inductions CAI , non synthetic fluids, BMR total bushing upgrade/1" lowering springs, DSE 32mm rear sway bar. GM fe4 shocks/struts/LCA's, AAM 3.91 diff, Vertini RFS1.8 20x9 +30. Conti ExtremeContact Sport 275/35/20. sjm autoprod ABL dash kit. Mike Norris tuned 413/419. Avenging Orange: 43 years of not buying into the Hype........and damn proud of it!! https://youtu.be/9JD9it6SmB8 https://youtu.be/xmelTlEzI34 KICKING CANCERS ASS SINCE 2015!!

08-31-2014, 02:18 AM	#9
Jrichards73 Drives: 2011 2SS/RS Victory Red Join Date: Aug 2011 Location: Virginia Posts: 921	My rear is a 3.91 rear in an auto with 15k on it (the car has 26k), filled with royal purple and half a bottle of GM friction modifier with zero issues. __________________ Updates: BTR Stage 2 VVT Cam Kit w/Smith Brothers Trunnions, Fluidampr, RX catch can, B&M Trans pan mod, Kooks Black Headers, Borla S-tunes, Eibach Multi-Pro-R2 coilovers and Swaybars, BMR Full Bushing kit with Toe and Trailing arms, RB Rotors w/EBC Pads, GForce 1400 Axles (now on order). AVH-X5800BHS in Scosche GM5201AB.

08-31-2014, 10:22 AM	#10
c-57d Drives: 14 2SS/RS Triple Black Ragtop LS3 Join Date: Mar 2014 Location: California Bay Area 95008 Posts: 305 View My Garage	2014 2SS/RS M6 here. Changed the diff fluid @ <>1K miles with Amsoil and ½ bottle of the Amsoil FM. No chatter, no problems. My 2¢

08-31-2014, 10:35 AM	#11
Chevrolade Account Suspended Drives: 2010 2SS/RS Join Date: Jan 2013 Location: Texas Posts: 1,050	I just got me a new diff going with Lucas 75/90 no additive needed

08-31-2014, 01:57 PM	#12
Camarotobeornottobe Drives: 1LE Join Date: Feb 2013 Location: East Coast Man Posts: 550	LOL, I guess I'll just throw the Redline or Amsoil in with an ounce or two of extra modifier and hope for the best. WTF, LOL

08-31-2014, 02:03 PM	#13
Andy-AMSOIL Drives: bicycle Join Date: Jun 2014 Location: Digging for oil Posts: 375	Let me help clear things up.. adding a little modifier is not going to hurt anything. . Not having enough will cause the diff to chatter. So don't get hung up on the fact that you may be adding some. My recommendation is that you add half tube to the rear diff.. this assuming you get the amsoil