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evillrdnikon
Samba Member
Joined: February 26, 2014
Posts: 180
Location: Las Vegas
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 Posted: Fri Mar 24, 2017 10:30 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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so I talked to Rancho and they said to use (EDITED) 80W-90 non synthetic (EDITED) in my transmission.
take it how you want fellas. Who is to argue with the company that sold you their product =/
Last edited by evillrdnikon on Fri Mar 24, 2017 11:06 am; edited 1 time in total |
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evillrdnikon
Samba Member
Joined: February 26, 2014
Posts: 180
Location: Las Vegas
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| Posted: Fri Mar 24, 2017 10:36 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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here is the stuff LAT has on their website for data.
http://latracingoils.com/product/lat-multipurpose-gear-oil/
Link to MSDS DATA:
http://latracingoils.com/wp-content/uploads/2015/06/80W90-RACING-GEAR-OIL-31237.pdf
LAT Multi-Purpose Gear Oil
LAT multi-purpose gear oil provides maximum heavy shock load and high carrying protection. Blended from the highest quality of petroleum base oils fortified with VI improvers, rust inhibitors, foam suppressants and LFR extreme pressure additives. Multi-viscosity protects your gears within a wide range of applications.
Exceeds API GL-5 and DOES NOT contain limited slip additives. Available in quart and 55 gallon drums.
Applications
Recommended for street performance engines, light duty drag racing, light duty off road racing.
Features
Exceeds API GL-5
Protects hypoid gears from wear and scuffing
Anti-foaming agents
Contains rust inhibitors & VI improvers
Attributes
Appearance AmberViscosity @100c 20.2cStViscosity @ 40c 179cSt |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76949
Location: Sneaking up behind you
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| Posted: Fri Mar 24, 2017 10:48 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| evillrdnikon wrote: |
so I talked to Rancho and they said to use 80-90 regular in my transmission.
take it how you want fellas. Who is to argue with the company that sold you their product =/ |
What does "regular" mean?
GL3, GL4 or GL5?
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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evillrdnikon
Samba Member
Joined: February 26, 2014
Posts: 180
Location: Las Vegas
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| Posted: Fri Mar 24, 2017 11:03 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Glenn wrote: |
| evillrdnikon wrote: |
so I talked to Rancho and they said to use 80-90 regular in my transmission.
take it how you want fellas. Who is to argue with the company that sold you their product =/ |
What does "regular" mean?
GL3, GL4 or GL5? |
in the link provided above for the PDF it states
"EP GO SAE 80W90 GL-5 w/Mo"
quoted by Rancho themselve "Use regular 80w-90, no synthetic"
Terminology is a bitch. |
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vwracerdave
Samba Member
Joined: November 11, 2004
Posts: 15309
Location: Deep in the 405
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| Posted: Fri Mar 24, 2017 11:38 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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Rancho recommends LAT gear oil because they are part owners of the company.
I use semi-synthetic gear oil in my street cars and full synthetic gear oil in my race car.
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Zundfolge1432
Samba Member
Joined: June 13, 2004
Posts: 12468
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| Posted: Mon Apr 03, 2017 12:37 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Synthetic here for years no problems works well in cold weather too. Amsoil |
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Frodge
Samba Member
Joined: October 04, 2006
Posts: 1991
Location: Dump
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| Posted: Tue Apr 25, 2017 3:47 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Other than the Brad Penn, what other gl 4 80w90 is readily available? Online purchase is fine. |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26790
Location: Colorado Springs
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| Posted: Tue Apr 25, 2017 4:46 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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acdelco 12346190 is available from summit racing.
It is a 75-90 synthetic gl-4 gear oil for synchronized transmissions |
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79SuperVert
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Joined: May 31, 2002
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Location: Elizabeth, NJ & La Isla Del Encanto
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| Posted: Tue Apr 25, 2017 6:14 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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Red Line sells MT-90 full synthetic that meets 80W-90 specs:
https://www.redlineoil.com/product.aspx?pid=46
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Wildthings
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Joined: March 13, 2005
Posts: 50353
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| Posted: Tue Apr 25, 2017 7:45 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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Redline does not recommend Mt-90 for use with hypoid gears, from their website: "MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears" |
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EVfun
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Joined: April 01, 2012
Posts: 5481
Location: Seattle
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| Posted: Tue Apr 25, 2017 8:24 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Wildthings wrote: |
Redline does not recommend Mt-90 for use with hypoid gears, from their website: "MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears" |
The Beetle transaxle does not have hypoid gears, however, the Bus transaxle does.
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Frodge
Samba Member
Joined: October 04, 2006
Posts: 1991
Location: Dump
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| Posted: Wed Apr 26, 2017 12:36 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| I'd like to stay away from synthetics with old seals. |
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evillrdnikon
Samba Member
Joined: February 26, 2014
Posts: 180
Location: Las Vegas
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| Posted: Thu May 04, 2017 1:38 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Going with what ever the best GL5 synthetic oil is! Changed my mind from up above! lmao! |
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Bruce
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Joined: May 16, 2003
Posts: 17290
Location: Left coast, Canada
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| Posted: Fri May 05, 2017 12:54 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| EVfun wrote: |
| The Beetle transaxle does not have hypoid gears, however, the Bus transaxle does. |
Correct.
The reason you must use GL-5 with hypoid gears is because the contact pressure is greater due to the pinion offset. This higher stress means you need an oil with a greater extreme pressure rating.
So you may be thinking that since a Type 1 gearbox doesn't use hypoid gears, you don't need to bother with GL-5 oil. Not so. It has now become common to find R&P gears that are simply worn out at the gear teeth. Wear that can be prevented by using an oil with a higher extreme pressure rating.
If you buy a rebuilt gearbox from Rancho now-a-days, there's a high likelyhood you're getting a new R&P. Because so many of the used ones are JUNK!
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modok
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Joined: October 30, 2009
Posts: 26790
Location: Colorado Springs
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| Posted: Fri May 05, 2017 4:36 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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I actually thought the opposite, from what I've seen, but I don't doubt it.
If that's what you are seeing then there must be a cause for it, although what that is.....not so easy to say, unless you know the history of it.
The oil companies don't tell you much. What WAS in there?
This delco trans oil and the valvoline MTF are recommended for a lot of the same apps but they look and smell and feel totally different. The valvoline IMO, seems more conventional, "smells right", but that's about all I have to go on, for now. |
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Zundfolge1432
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Joined: June 13, 2004
Posts: 12468
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| Posted: Sun May 07, 2017 5:00 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Frodge wrote: |
| I'd like to stay away from synthetics with old seals. |
This is a fallacy started by big oil in the early 70s to discredit synthetic oil. It is based in fear and nothing else. How sad that over 40 years later this is still being repeated. |
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Wildthings
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Joined: March 13, 2005
Posts: 50353
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| Posted: Sun May 07, 2017 9:16 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Zundfolge1432 wrote: |
| Frodge wrote: |
| I'd like to stay away from synthetics with old seals. |
This is a fallacy started by big oil in the early 70s to discredit synthetic oil. It is based in fear and nothing else. How sad that over 40 years later this is still being repeated. |
Maybe, maybe not. When you go from a 40wt motor oil to a 5w40 you are apt to get more seepage as the thinner lubricant can more easily pass around gasket and seals. Same with going from a 140wt gear oil to an 85w140. If you already have a slow leak and you go to a thinner oil the leak is very apt to get worse, nothing to do with synthetic oil necessarily, just the way of any lubricant.
Lets face it 50ish years ago, seals didn't always seal all that well when new and certainly didn't last all that long. My '72 Dodge even came with leather seals on the front wheels, probably a design hold over from the 1930's. |
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Bruce
Samba Member
Joined: May 16, 2003
Posts: 17290
Location: Left coast, Canada
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| Posted: Sun May 07, 2017 11:15 am Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Wildthings wrote: |
| Zundfolge1432 wrote: |
| Frodge wrote: |
| I'd like to stay away from synthetics with old seals. |
This is a fallacy started by big oil in the early 70s to discredit synthetic oil. It is based in fear and nothing else. How sad that over 40 years later this is still being repeated. |
When you go from a 40wt motor oil to a 5w40 you are apt to get more seepage as the thinner lubricant can more easily pass around gasket and seals. |
Not true.
A 5W-40 oil at 100ºC is the same viscosity as a straight 40. No possible difference in leakage there due to different oils.
Then when the oil is cold, a 5W-40 is still way thicker than either of these oils at 100ºC.
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| overheard at the portland Swap Meet... wrote: |
| ..... a steering wheel made from a mastadon tusk..... |
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76949
Location: Sneaking up behind you
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50353
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| Posted: Sun May 07, 2017 12:41 pm Post subject: Re: GL 4 or GL 5 - "Official Gear Lube Topic" |
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| Bruce wrote: |
| Wildthings wrote: |
| Zundfolge1432 wrote: |
| Frodge wrote: |
| I'd like to stay away from synthetics with old seals. |
This is a fallacy started by big oil in the early 70s to discredit synthetic oil. It is based in fear and nothing else. How sad that over 40 years later this is still being repeated. |
When you go from a 40wt motor oil to a 5w40 you are apt to get more seepage as the thinner lubricant can more easily pass around gasket and seals. |
Not true.
A 5W-40 oil at 100ºC is the same viscosity as a straight 40. No possible difference in leakage there due to different oils.
Then when the oil is cold, a 5W-40 is still way thicker than either of these oils at 100ºC. |
And an engine spends how much of its time running? Maybe 5% and the rest of its time is sitting cold, so a weeping gasket or seal can leak quite a bit while the box is cold. |
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