Lotus Elan

Where to buy ep90 gear oil in the US

PostPost by: Sbarron » Tue Jun 11, 2013 12:41 am

Where to buy EP90 gear oil in the USA? Can't find it at anywhere.

SmBarron
Sbarron
New-tral
 
Posts: 14
Joined: 09 Feb 2012

PostPost by: rgh0 » Tue Jun 11, 2013 12:41 pm

Modern synthetics and mineral oils are no longer a single grade. Typically they are quoted as a 75w/90 or 85w/90. These give superior low temperature protection while still maintaining the needed high temperature properties. You will struggle to find a true single grade EP 90 oil today. The "EP" rating has been replaced by a "GL" classification. traditional EP oils are either GL4 or GL5 in todays terms.

The GL rating is significant for our cars - GL4 for gear boxes in an Elan and GL5 for the diff. This is a measure of the oils ability to lubricate in sliding contact which is much higher in the hypoid diff than in the helical gearbox. GL5 in the gear box you don't want as it over lubricates the sliding contact in the synchroniser rings and reduces their performance where you do want it n the diff as it lubricates the hypoid gears the best.

If you want to buy gear oils and want to understand the issues then read the Redline web site and then make your choice.

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 7487
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: cal44 » Tue Jun 11, 2013 10:54 pm

SmBarron,

Many Porsche guys.....guess that is me, and we are a picky bunch.....use Swepco 201. I use it in the Tiger, Boss 302's, P cars and Lotus.
I just have it shipped to the house from :
http://www.paragon-products.com/Swepco- ... co-201.htm

mike
"Be Polite, Be Professional, But have a plan to kill everyone you meet"
General "Mad Dog" James Mattis United States Marines
cal44
Fourth Gear
Fourth Gear
 
Posts: 693
Joined: 28 Nov 2010

PostPost by: cabc26b » Sat Jun 15, 2013 3:42 pm

SMBarron,

I have never had issues as a result of using redline , it is widely available in the US I have even seen at NAPA.

George
cabc26b
Fourth Gear
Fourth Gear
 
Posts: 936
Joined: 21 Sep 2003

PostPost by: Sbarron » Sun Jun 16, 2013 3:19 am

Thanks to all, redline it is
Sbarron
New-tral
 
Posts: 14
Joined: 09 Feb 2012

PostPost by: nomad » Mon Jun 17, 2013 11:30 am

Certain modern gear oil's are hard on brass component's such as syncro rings or brass bearing carrier's. I would have to read up on that again but trying to match original spec's is a good idea.

Kurt
26/3754
nomad
Fourth Gear
Fourth Gear
 
Posts: 933
Joined: 05 May 2012
Location: South Dakota, USA

PostPost by: rgh0 » Mon Jun 17, 2013 1:54 pm

nomad wrote:Certain modern gear oil's are hard on brass component's such as syncro rings or brass bearing carrier's. I would have to read up on that again but trying to match original spec's is a good idea.

Kurt
26/3754


Traditional EP formulations had high sulphur levels which gave the oil its EP = extreme pressure lubrication properties, you could smell the sulphur in the oil. Modern GL-4 synthetic gear oils have typically much lower levels of sulphur despite their generally better EP characteristics. Modern GL-5 oils have somewhat higher levels of Sulphur depending on the maker to meet the GL-5 specification.

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 7487
Joined: 22 Sep 2003
Location: Melbourne, Australia

Total Online:

Users browsing this forum: No registered users and 14 guests