Gear oil..current thinking?

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Gear oil..current thinking?

Postby max and caddy » 10 Jun 2018, 15:24

So it's time to do my oil again..I can't even remember what was filled last time but what's folks opinion on the best value and best quality oil availed today..?
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Re: Gear oil..current thinking?

Postby DoubleOSeven » 10 Jun 2018, 15:30

Gearbox oil lasts a lifetime and if you can remember doing it, then it doesn’t need doing. But use this (4.5L) if you need:

https://www.brickwerks.co.uk/gearbox-oi ... litre.html
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Re: Gear oil..current thinking?

Postby max and caddy » 10 Jun 2018, 15:33

I hear you but I don't work like that.. it's getting changed.
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Gear oil..current thinking?

Postby DoubleOSeven » 10 Jun 2018, 15:58

‘Lifetime’ of a gearbox that is, I don’t know the VW lifetime spec. for our gearboxes is, mind. Probably somewhere between 50-100k normally. I guess the Syncro gearbox has to work a bit harder too, so maybe a good idea.
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Re: Gear oil..current thinking?

Postby irishkeet » 10 Jun 2018, 19:33

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Re: Gear oil..current thinking?

Postby Aidan » 10 Jun 2018, 19:56

@double0seven

oil has a shelf life unopened in the can so the stuff breaks down over time anyway and when subjected to work and heat cycles in the gearbox the blend of oils and additives breaks down more, carbonisation occurs, and lubrocity is reduced leading to wear

when VW said oil for life of vehicle
100K miles 10 years they meant throw it (the van) away and buy a T4, these days they mean 6-7 years throw it away and they put the absolute bare minimum single weight oil in the gearboxes (less than 3 litres in most front wheel drive boxes)

what they should have said is 'if you want to keep the vehicle alive for 30+ years change the oil regularly, 2-3 years 20k miles, more often if worked hard and inspect the drain plug magnet so you can tell when wear levels mean a rebuild is advised rather than driving it into the ground/until it breaks and then fix it'

you change the oil in the engine regularly so why wouldn't you change the oil in the transmission, it gets hot and the oil is worked hard just not as hot or subject to products of combustion but it still gets worked

just mho of course
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Re: Gear oil..current thinking?

Postby silverbullet » 10 Jun 2018, 21:56

Transmission oils lead a terrible life: shock loading from torque impulses and individual gear tooth loads, shearing and heat from the synchronization cones with every gear change (and the hypoid offset of the final drive)
All of these actions break down the molecular chains that keep the oil film together and prevent metal parts from actually touching each other.
Engine oil has it easy!

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Re: Gear oil..current thinking?

Postby max and caddy » 11 Jun 2018, 17:26

So..some of this is on its way.. https://rover.ebay.com/rover/0/0/0?mpre ... 0606606374

Hopefully it’s the one..
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Re: Gear oil..current thinking?

Postby DoubleOSeven » 12 Jun 2018, 13:39

Well, thanks a lot. Now I’ve got to go and change my gearbox oil ! ;)
Just as I was ticking off a few items
from the ‘jobs to do’ list. Speakers, finally swapped out after 3 years of avoiding. Waxoyl, finally...didn’t really need it, but an excuse to get covered in muck.
...Better dig out my gearbox sump key.
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Re: Gear oil..current thinking?

Postby max and caddy » 13 Jun 2018, 12:22

You will thank me when it doesn’t break..well you might not but it won’t do any harm
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Re: Gear oil..current thinking?

Postby lloydy » 13 Jun 2018, 17:59

ive had this in mine for the last two changes, its the grade albins recommend for their gears and tdi's https://www.opieoils.co.uk/p-115249-mil ... n-oil.aspx
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Gear oil..current thinking?

Postby DoubleOSeven » 18 Jul 2018, 06:49

Good advice taken; changed the gearbox oil. It takes an age to fill / thick stuff. Magnetic sump plug did have fillings on it. Postponed the gearbox rebuild a few years hopefully. Never had any issues, silky gear changes and long may it continue.
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Re: Gear oil..current thinking?

Postby jebiga41 » 18 Jul 2018, 08:13

DoubleOSeven wrote:Good advice taken; changed the gearbox oil. It takes an age to fill / thick stuff. Magnetic sump plug did have fillings on it. Postponed the gearbox rebuild a few years hopefully. Never had any issues, silky gear changes and long may it continue.

Should be a sludgy stem any pics of the plug?
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