Which Gearbox Oil - MD22L + Hurth HBW100 gearbox

Richard10002

Richard10002

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Hi,

having trouble working out which gearbox oil to use.

Volvo Penta MD22L Diesel Engine with a Hurth HBW 100 Gearbox.

The box says use Volvo Penta GL5 synthetic transmission oil, but where can you get it easily. It must be replicated by a standard product I presume....

Any ideas? Could I just use engine oil e.g 10W40?

Many Thanks


Richard
 
Re: Which Gearbox Oil - Ooh, you\'re smart!

So ring my chimes and advise suitable gearbox oil for Borg Warner 1.5:l on the back end of my Perkins 6.354, shaft driven.
Can't wait!
 
Re: Which Gearbox Oil - Ooh, you\'re smart!

my hurth uses any good quality ATF oil to dexron 2 or 3.Castrol.Shell etc. altho I use Comma.!!
 
GL5 is a API service denom for gear oil. My box (and many others including stern drives, etc use the same API oil). I think you will find that there are a number of different part numbers for the same oil and it comes in different viscosities.

VP consumable spares are quite cheap here (eg not worth the trouble finding substitute filters, etc) so is not much dearer to by the Volvo oil compared to from an oil company - which is what I did first time around in order to identify the oil viscosity.

The box on my MD22L is a VP box (MS2A, a cone clutch type), maybe it is basically a Hurth, I don't know but its oil viscosity requirement is SAE 75-90 synthetic gear oil so I use Mobil SAE 75-90 synthetic gear oil but for which here the smallest quantity one can buy it in is 4 litres - cost me about the equivalent of GBP30 and enuff for around 4 -5 fills of most small marine gearboxes.

Don't use engine oil and I would not recommend using "semi synthetic" oils either - given the small quantities required the cost difference is not worth it.

John
 
[ QUOTE ]
GL5 is a API service denom for gear oil.

The box on my MD22L is a VP box (MS2A, a cone clutch type), maybe it is basically a Hurth, I don't know but its oil viscosity requirement is SAE 75-90 synthetic gear oil so I use Mobil SAE 75-90 synthetic gear oil but for which here the smallest quantity one can buy it in is 4 litres - cost me about the equivalent of GBP30 and enuff for around 4 -5 fills of most small marine gearboxes.

Don't use engine oil and I would not recommend using "semi synthetic" oils either - given the small quantities required the cost difference is not worth it.

John

[/ QUOTE ]

Thanks for that... just what I needed to know... i.e. what GL5 is.

I'll get down to the garage in bayona and see what they have.

Unfortunately, I have used engine oil on the say so of quite a few people, (Shell 10W40), and it was making some funny noises when using the gears foor mooring, after a fair few hours of use across Biscay.

However, today, it does forward and reverse fine. Seems like a heat issue?

Hope I havent damaged it!

Richard
 
[ QUOTE ]
From your link your box is different to mine then but on same engine.

John

[/ QUOTE ]

The Moody Manual says it is a Hurth HBW 100, (wich seems to be a ZF 10M?), but the gearbox has Volvo Penta stamped on it... so I have no idea really!

having said that... the engine is a Montego Diesel, and has Volvo Penta all over it.
 
Definitely the same engine as me.

Does your gearbox look like the one in the link you gave? The standard Volvo ones that I have seen on that engine are fitted integral with the engine (ie no coupling in between) and have a large round filler on top but aft of that the top of the casing slopes down to the coupling to the prop shaft.

I have chopped the following for GL-5 Service Category -

This designation denotes lubricants intended for gears, particularly hypoid gears, in axles operating under various combinations of high-speed, low-speed, high-torque, and shock-load conditions. Lubricants qualified under U.S. Military Specification MIL-L-2105E (formerly MIL-L-2105D) satisfy the requirements of the API GL-5 service designation. Performance test details are in ASTM Publication STP-512A, "Laboratory Performance Tests for Automotive Gear Lubricants Intended for API GL-5 Service."

API GL-5 quality gear lubricants possess adequate extreme pressure characteristics for essentially all automotive gear applications to prevent wear, pitting, scoring and ultimate gear failure, along with protection against oxidation, thermal degradation, rust, copper corrosion, foaming and water emulsification. API GL-5 oils are relatively equivalent to MIL-L-2105E gear lubricants (see below) and are the most widely used automotive gear lubricants in North America for automobile, truck, bus and heavy construction equipment applications.

As far as I know gear oils start at viscosity SAE 70W but would not be sure on that. If so that (and seemingly the GL5 category) would conflict with the auto transmission fluid specification given in the Hurth link you gave whic I would assume is of much lower viscosity.

As I said, for my own box, so I would be sure of the viscosity, I originally bought the recommended part number oil off Volvo Penta which came in a 1 litre container so did not break the bank at all (not much dearer than from an oil company, except oil company here only does 4 litre packs).

John
 
[ QUOTE ]
Definitely the same engine as me.

Does your gearbox look like the one in the link you gave? The standard Volvo ones that I have seen on that engine are fitted integral with the engine (ie no coupling in between) and have a large round filler on top but aft of that the top of the casing slopes down to the coupling to the prop shaft.

As far as I know gear oils start at viscosity SAE 70W but would not be sure on that. If so that (and seemingly the GL5 category) would conflict with the auto transmission fluid specification given in the Hurth link you gave whic I would assume is of much lower viscosity.

As I said, for my own box, so I would be sure of the viscosity, I originally bought the recommended part number oil off Volvo Penta which came in a 1 litre container so did not break the bank at all (not much dearer than from an oil company, except oil company here only does 4 litre packs).

John

[/ QUOTE ]

It looks like your description.. white, attached directly to the engine, filler cap and dipstick on top.

I went to the local garage and bought some transmission oil which says API : GL5 on it... Campsa multigrado 80w/90 Extrema Precision Lubricante.

We'll see how it goes - Thanks to all for the help.
 
Yes, they are white so is sounding like normal VP box.

Don't know if what you got was synthetic or not - I suspect even if not is no problem at all, but maybe for next time consider synthetic that being what is specified. Cost is not a great deal of difference, only problem I found was had to get minimum 4 litres as bought from my usual supplier.

John
 
[ QUOTE ]
Yes, they are white so is sounding like normal VP box.

Don't know if what you got was synthetic or not - I suspect even if not is no problem at all, but maybe for next time consider synthetic that being what is specified. Cost is not a great deal of difference, only problem I found was had to get minimum 4 litres as bought from my usual supplier.

John

[/ QUOTE ]

Nor do I... but in this instant, beggars couldnt be choosers... it was all they had, and I'm just glad it said GL-5 on the bottle.

I bought 4 litres with the intention of perhaps changing it a few times over the trip to get rid of any traces of engine oil.

did a short trip of a few hundred yards to and from the diesel berth... so far so good!! I'll only know after a few hours of running under load, as that is when the problem has occured.

I'll keep you posted.
 
Since filling with GL5 we are now in Lagos, having overnighted in Lexioes & Cascais.... problem has disappeared.

So... various bits of 2nd hand advice that engine oil in the gearbox is OK was duff, (in my case). The box has a lable specifying GL5, and this is what it needed.

Thanks to all for the help... dont know where I would be without all the advice available here.

Cheers

Richard
 
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