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mrwoo



Member Since: 03 Jan 2008
Location: Cheshire
Posts: 286
United Kingdom 2004 Defender 90 Td5 CSW Epsom Green
Oil Grades
I have found several posts out there on the different brands of oil but I am trying to find out a definitive answer on all grades for our Defenders, what I know so far is

1. Engine = 5W30 (meeting ford spec)
2. Diffs = 80W90
3. Transfer = 75W90
4. Gearbox = GL4

What I am trying to find out is what viscosity is the gearbox oil and whether GL5 is better than GL4?

Please correct me on any of the above, I want to be 100% sure that I and others that read this thread buy the right oil regardless of brand. I must admit I like to buy the more expensive synthetic brands but that isn't what I'm after here.

Cheers
Post #24972 23rd Feb 2010 9:10pm
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LESVOSD110



Member Since: 19 Aug 2009
Location: South Africa
Posts: 241
South Africa 2010 Defender 110 Puma 2.4 SW Fuji White
GL-5 is normaly only used in diffs but can be used in a gearbox if the vehicle specifies it.If you use it in a gearbox that requires GL-4 you will eat up your syncros with the additive that is in GL-5.Ford normaly uses 75W90. Puma 110 SW
90 V8 SOFT TOP
Post #24985 24th Feb 2010 5:16am
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dgardel



Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586
Italy 
Re: Oil Grades
mrwoo wrote:
.............
4. Gearbox = GL4



Gearbox oil is Castrol BOT328 (BOT130 is superseded) and is a (fill for life =200.000km) synthetic 80-W90 GL4 and GL5 gearbox oil Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

IID Pro MV License
Post #24993 24th Feb 2010 7:44am
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mrwoo



Member Since: 03 Jan 2008
Location: Cheshire
Posts: 286
United Kingdom 2004 Defender 90 Td5 CSW Epsom Green
Re: Oil Grades
dgardel wrote:
mrwoo wrote:
.............
4. Gearbox = GL4



Gearbox oil is Castrol BOT328 (BOT130 is superseded) and is a (fill for life =200.000km) synthetic 80-W90 GL4 and GL5 gearbox oil


Thanks for that information, do you buy your castrol online?
Post #24995 24th Feb 2010 7:46am
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dgardel



Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586
Italy 
Re: Oil Grades
mrwoo wrote:
.............

Thanks for that information, do you buy your castrol online?


it's quite difficult to buy on line............

I bought my BOT328 directly from my LR dealer (at a good discounted price Whistle ) Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

IID Pro MV License
Post #25029 24th Feb 2010 12:33pm
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