MGExp

MG Motorsports Forum

Straight Cut Gearbox Oil

Moss Motors
AutoShrine Sponsor
AutoShrine Sponsor
AutoShrine Sponsor
AutoShrine Sponsor

Topic List Forum List Newer Older Start New Topic
Straight Cut Gearbox Oil
#1
68Sprite Avatar
68Sprite Chris Wojtal
Dallas, GA, USA   USA
Sign in to contact
What is everyone's preferred SCCR oil? Redline MTL? I see Valvoline has a VR1 30wt. or the VR!20-50. Will any generic non synthetic 30 weight or 20-50 do? Is the extra zinc in the VR1 good or even needed for a transmission. MTL is yellow metal safe and Redlines website says it works in our transmission.
All opinions welcome.

Chris W

Reply
Was this post helpful or interesting?
Yes No Thank
. Become a Supporting Member to hide this ad & support a small business
Re: Straight Cut Gearbox Oil
#2
Speedracer Avatar
Speedracer Platinum Member Hap Waldrop
Taylors, SC, USA   USA
Sign in to contact
1967 MG MGB Racecar "The Biscuit"
I used VR1 in both MGB and Midget with the sychromesh stock type SC/CR gear sets. I tried MTL it made no difference, so I went back to VR1.


Hap Waldrop
Acme Speed Shop
864-370-3000
Website: www.acmespeedshop.com
hapwaldrop@acmespeedshop.com


Member Services:
Acme Speed Shop www.mgexp.com
MG/ Triumph Performance Street Engines - Cylinder Head Porting for street performance and race - DIY Engine Rebuild Kits With Free Tech Advice - VTO alloy wheels for British Sports Cars, and others
Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#3
ghnl Avatar
ghnl Eric Russell
Mebane, NC, USA   USA
Sign in to contact
1961 MG MGA "Calvin"
I have CR gears in my MGA (but not SC). I've used both VR-1 20w-50 & Redline MT-90. I don't notice any difference in shifting feel.


Eric Russell ~ Mebane, NC
1961 MGA #61, 1981 Alfa Romeo GTV6, 1984 Alfa Romeo Spider, 1991 Honda ST1100

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#4
refisk Rick Fisk
Frankenmuth, MI, USA   USA
Sign in to contact
I tried Redline MTL and the difference was minimal. Went back to VR1 20W50 because I only have to buy one oil then. smiling smiley

Reply
Was this post helpful or interesting?
Yes No Thank
. Become a Supporting Member to hide this ad & support a small business
Re: Straight Cut Gearbox Oil
#5
lieb923 Norman Lieberman
Philadelphia, PA, USA   USA
Sign in to contact
1960 Austin-Healey Bugeye Sprite
2015 BMW M Coupe
Anyone tried RL-D4atf?

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#6
hoffman900 Bob A
Front Range, CO, USA   USA
Sign in to contact
1978 Yamaha MC TT500 "Flat Tracker"
Lots of transmission builders hate Redline MTL. The Valvoline or Mobil One stuff is good.



Edited 1 time(s). Last edit at 2024-04-19 10:02 AM by hoffman900.

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#7
refisk Rick Fisk
Frankenmuth, MI, USA   USA
Sign in to contact
Who are these "lots of transmission builders"?

In reply to # 4786917 by hoffman900 Lots of transmission builders hate Redline MTL. The Valvoline or Mobil One stuff is good.

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#8
ghnl Avatar
ghnl Eric Russell
Mebane, NC, USA   USA
Sign in to contact
1961 MG MGA "Calvin"
And what do they hate about it?


Eric Russell ~ Mebane, NC
1961 MGA #61, 1981 Alfa Romeo GTV6, 1984 Alfa Romeo Spider, 1991 Honda ST1100

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#9
hoffman900 Bob A
Front Range, CO, USA   USA
Sign in to contact
1978 Yamaha MC TT500 "Flat Tracker"
In reply to # 4786921 by refisk Who are these "lots of transmission builders"?

In reply to # 4786917 by hoffman900 Lots of transmission builders hate Redline MTL. The Valvoline or Mobil One stuff is good.

Hightower, GForce, Andrews… all big hp NASCAR and GT racing transmission builders, that produce a lot of heat and put up with a lot of load.

Spec Miata and Honda racing transmission builders as well. It’s too thin at temp and can eat away at some softer components (Honda builders have this problem). Mobil One is the good stuff.



Edited 2 time(s). Last edit at 2024-04-19 11:41 AM by hoffman900.

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#10
refisk Rick Fisk
Frankenmuth, MI, USA   USA
Sign in to contact
Those are very, very different transmissions. And our engines don't make 1/4 the horsepower of a Nascar or GT car. Do you really think our transmissions are subjected to the same loads?

In reply to # 4786943 by hoffman900
In reply to # 4786921 by refisk Who are these "lots of transmission builders"?

In reply to # 4786917 by hoffman900 Lots of transmission builders hate Redline MTL. The Valvoline or Mobil One stuff is good.

Hightower, GForce, Andrews… all big hp NASCAR and GT racing transmission builders, that produce a lot of heat and put up with a lot of load.

Spec Miata and Honda racing transmission builders as well. It’s too thin at temp and can eat away at some softer components (Honda builders have this problem). Mobil One is the good stuff.

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#11
hoffman900 Bob A
Front Range, CO, USA   USA
Sign in to contact
1978 Yamaha MC TT500 "Flat Tracker"
In reply to # 4786979 by refisk Those are very, very different transmissions. And our engines don't make 1/4 the horsepower of a Nascar or GT car. Do you really think our transmissions are subjected to the same loads?

In reply to # 4786943 by hoffman900
In reply to # 4786921 by refisk Who are these "lots of transmission builders"?

In reply to # 4786917 by hoffman900 Lots of transmission builders hate Redline MTL. The Valvoline or Mobil One stuff is good.

Hightower, GForce, Andrews… all big hp NASCAR and GT racing transmission builders, that produce a lot of heat and put up with a lot of load.

Spec Miata and Honda racing transmission builders as well. It’s too thin at temp and can eat away at some softer components (Honda builders have this problem). Mobil One is the good stuff.

Our components are scaled down, so that’s an apples and oranges argument. They make more power, but they also have more oil volume and bigger components.

This is like tires, the harder / faster you go, the more heat and load you put into components. On our Alfa and Triumph engines are putting 100% + more power than stock through them and drivers use them hard.

Some people might get seasons out of them, like tires, to me that just tells me they’re not going hard enough.



Edited 2 time(s). Last edit at 2024-04-19 02:11 PM by hoffman900.

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#12
refisk Rick Fisk
Frankenmuth, MI, USA   USA
Sign in to contact
Exactly - apples and oranges.

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#13
hoffman900 Bob A
Front Range, CO, USA   USA
Sign in to contact
1978 Yamaha MC TT500 "Flat Tracker"
In reply to # 4787025 by refisk Exactly - apples and oranges.

Yeah that went over your head lol

But use what you want.



Edited 1 time(s). Last edit at 2024-04-19 03:11 PM by hoffman900.

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Straight Cut Gearbox Oil
#14
Speedracer Avatar
Speedracer Platinum Member Hap Waldrop
Taylors, SC, USA   USA
Sign in to contact
1967 MG MGB Racecar "The Biscuit"
In reply to # 4786943 by hoffman900
In reply to # 4786921 by refisk Who are these "lots of transmission builders"?

In reply to # 4786917 by hoffman900 Lots of transmission builders hate Redline MTL. The Valvoline or Mobil One stuff is good.

Hightower, GForce, Andrews… all big hp NASCAR and GT racing transmission builders, that produce a lot of heat and put up with a lot of load.

Spec Miata and Honda racing transmission builders as well. It’s too thin at temp and can eat away at some softer components (Honda builders have this problem). Mobil One is the good stuff.

Hightower, lives like 2 miles down the road from me, he likes Mobile One gear oil with his additive, that's what I used in SCCA Midget Taylor and worked great. He showed me gear of folks running Redline in his dog boxes compared to folks that ran Mobile One and his additive, and you could see a big difference, as for the gears looking heated, or not. Don't do that on the synchromesh SC/CR though, just go with VR1


Hap Waldrop
Acme Speed Shop
864-370-3000
Website: www.acmespeedshop.com
hapwaldrop@acmespeedshop.com


Member Services:
Acme Speed Shop www.mgexp.com
MG/ Triumph Performance Street Engines - Cylinder Head Porting for street performance and race - DIY Engine Rebuild Kits With Free Tech Advice - VTO alloy wheels for British Sports Cars, and others
Reply
Was this post helpful or interesting?
Yes No Thank
about 1 week and 3 days later...
Re: Straight Cut Gearbox Oil
#15
Dwight Avatar
Dwight Dwight McCullough
Ham Lake, MN, USA   USA
Sign in to contact
1974 MG MGB "THE 'B"
1975 MG MGB "Da ' B"
1979 MG MGB Limited Edition (LE) "N.A."
What I use in many transmission; https://www.amsoil.com/p/amsoil-5w-30-manual-synchromesh-transmission-fluid-mtf/

Hap, I will send you some to try...

Call/message/email etc



Edited 1 time(s). Last edit at 2024-05-02 09:49 AM by Dwight.

Reply
Was this post helpful or interesting?
Yes No Thank
Topic List Forum List Newer Older Start New Topic

To reply or ask your own question:

or

Registration is FREE and takes less than a minute

Forums  

Having trouble posting or changing forum settings?
Read the Forum Help (FAQ) or contact the webmaster





Join The Club
Sign in to ask questions, share photos, and access all website features
Forum List
MGB & GT MG Midget Buy, Sell & Trade Vendor Market MG Performance MG Engine Swaps Factory Correct MGA MGC MG Magnette 1100 & 1300 T-Series & Prewar EV Conversion Modern MG MG Motorsports Events & Meetup MG 2024 Katy Texas Other Vehicles Off Topic Clubs Archived
Your Cars
1977 MG MGB
Gerald Geil   USA
1977 MGB
For Sale
Text Size
Larger Smaller
Reset Save