Automatic gearbox oil.
- Thread starter phil
- Start date
Phil, Auto trans oil and topping up procedure is a known hazardous area where people get in all sorts of bother. For that reason Harvey has done a write up which is attached as a "sticky" at the top of the transmissions section. Have a read of that and come back if you have any further questions.
Chris
Chris
To be on the safe side, use a type F fluid...ie Castrol TQF. The BW35 saw far more development in Australia with Ford than in the U.K, so what applies here will be quite different.
Castrol TQF is a mineral oil. The box holds a little over 8 litres without looking, but you will only drain close to 4 litres when removing the pan. The final level must be set with the transmission at operating temperature.
Ron.
Castrol TQF is a mineral oil. The box holds a little over 8 litres without looking, but you will only drain close to 4 litres when removing the pan. The final level must be set with the transmission at operating temperature.
Ron.
Thanks guys. I never even noticed the sticky to be honest! Now read and understood. Although it mentions removing the pan? Is there no drain plug? Is there a filter? I have a suction tool, I wonder could I just suck the fluid out of the dipstick hole and refil that way? Would save jacking up etc. 
How hardy is this gearbox? How long do they normally last and are they cheap to repair? Can repairs be done in situ? Which box would my car have, being a 1971 v8?
How hardy is this gearbox? How long do they normally last and are they cheap to repair? Can repairs be done in situ? Which box would my car have, being a 1971 v8?
It should have a BW 35 Phil. They are pretty robust, provided that the kickdown is set up correctly. The kickdown cable also controls the pressures within the box, so it isn't just there for hard driving! A number of things are adjustable externally and they are noticeably cheaper than more modern auto's to repair. However a fill of the wrong fluid will destruy the bands in no time at all - which is why adhering to the recommendations in Harvey's "sticky" is essential. Australian BW boxes have been developed to the point where there is little resemblance to the UK version so stick with Harvey's recommendations!
Chris
Chris
That's perfect.
As for draining/refilling there's a drain plug in the sump and if the level is correct before you start you can measure the amount you drain out and refill with the same amount. Do this 3 or 4 times with a run in between and you should be getting close to changing all of the fluid if you're trying to get rid of Dexron that's in there. You can never drain all of the fluid out, there is always some left in the converter. Capacity for the box/converter/cooler is about 8 litres.
As for draining/refilling there's a drain plug in the sump and if the level is correct before you start you can measure the amount you drain out and refill with the same amount. Do this 3 or 4 times with a run in between and you should be getting close to changing all of the fluid if you're trying to get rid of Dexron that's in there. You can never drain all of the fluid out, there is always some left in the converter. Capacity for the box/converter/cooler is about 8 litres.
I'm not aware of any problems caused with the actual mixing of different types of fluids, only the problems caused by using incorrect fluids in particular boxes, but there have been lots of new types introduced in recent years and I don't have specific knowledge of most of them.
phil wrote,...
That applied ONLY if you live in Australia where the BW35 saw development with Ford Australia and ONLY for transmissions built or rebuilt after circa 1982. In any case as far as I am aware, Dexron 2 is NLA.
As Harvey said, for the U.K BW35, type F only!
Ron.
That applied ONLY if you live in Australia where the BW35 saw development with Ford Australia and ONLY for transmissions built or rebuilt after circa 1982. In any case as far as I am aware, Dexron 2 is NLA.
As Harvey said, for the U.K BW35, type F only!
Ron.
It is always handy to substantiate a position else facts can be distorted and ultimately lost. So on the transmission fluid front, here is a link from Castol Australia on the fluid requirements for the Rover..
http://www.datateck.com.au/lube/castr_au/default.asp
As you can see, TQF is recommended for the transmission. No problems there.
Now Borg Warner transmissions also appeared in Fords which were manufactured and sold in Australia. The Ford Falcon XD form 1979 - 1982 was once such car. The specifications are here...http://www.uniquecarsandparts.com.au/fa ... ations.htm
As can be seen, the car has a BW35 transmission. Now the Castrol recommendations for this model....http://www.datateck.com.au/lube/castr_au/default.asp
As can be seen, TQF is the recommended fluid for the transmission.
Now Ford Australia became involved with the development of the Borg Warner transmissions for their cars in the early 1980s. In 1984 the Ford Falcon XF was introduced, and the specifications are here....http://www.uniquecarsandparts.com.au/fa ... ations.htm
As can be seen, the car features a BW35 transmission, so now to Castol and their recommendations...http://www.datateck.com.au/lube/castr_au/default.asp
They recommend a Dexron fluid meeting a GM specification. So something has changed within the transmission that makes them different to earlier versions. Friction materials and gear train would fit the bill.
Development of the BW35 continued with Ford Australia up until 1990 and although a Borg Warner by name it was no longer a 35 as it was back in the 1970s. In the U.K, no further development occured so the necessity to use TQF remains as Harvey advises. I use TQF in my transmission for the sole reason in that it contains no friction modifiers, so changes are even firmer than would otherwise be the case. The only part of my transmission which remains from the original Rover U.K spec is the valve body, and even that has been modified.
Ron.
http://www.datateck.com.au/lube/castr_au/default.asp
As you can see, TQF is recommended for the transmission. No problems there.
Now Borg Warner transmissions also appeared in Fords which were manufactured and sold in Australia. The Ford Falcon XD form 1979 - 1982 was once such car. The specifications are here...http://www.uniquecarsandparts.com.au/fa ... ations.htm
As can be seen, the car has a BW35 transmission. Now the Castrol recommendations for this model....http://www.datateck.com.au/lube/castr_au/default.asp
As can be seen, TQF is the recommended fluid for the transmission.
Now Ford Australia became involved with the development of the Borg Warner transmissions for their cars in the early 1980s. In 1984 the Ford Falcon XF was introduced, and the specifications are here....http://www.uniquecarsandparts.com.au/fa ... ations.htm
As can be seen, the car features a BW35 transmission, so now to Castol and their recommendations...http://www.datateck.com.au/lube/castr_au/default.asp
They recommend a Dexron fluid meeting a GM specification. So something has changed within the transmission that makes them different to earlier versions. Friction materials and gear train would fit the bill.
Development of the BW35 continued with Ford Australia up until 1990 and although a Borg Warner by name it was no longer a 35 as it was back in the 1970s. In the U.K, no further development occured so the necessity to use TQF remains as Harvey advises. I use TQF in my transmission for the sole reason in that it contains no friction modifiers, so changes are even firmer than would otherwise be the case. The only part of my transmission which remains from the original Rover U.K spec is the valve body, and even that has been modified.
Ron.
GRTV8
Well-Known Member
Re: Automatic gearbox oil.-Off the Shelf down under
Is this the right stuff for my BW35 auto box ?
This oil is available off the shelf at Super Cheap Auto -NZ and I would think Oz ,seeing as its an Oz company.
Looking at changing all the oils in a couple of months when Rover is back in use.
My Rover has gone into hibernation with the onset of winter .
Rego on hold ,WOF run out
Cold and wet outside most days .
Rover is sitting in my shed under several old duvets. A bucket of rat baits under her so no one takes up residence whilst not in use.
The odd run up the road when the sun is out and time provides, is the most that will happen over winter.
Gerald
Is this the right stuff for my BW35 auto box ?
This oil is available off the shelf at Super Cheap Auto -NZ and I would think Oz ,seeing as its an Oz company.
Looking at changing all the oils in a couple of months when Rover is back in use.
My Rover has gone into hibernation with the onset of winter .
Rego on hold ,WOF run out
Cold and wet outside most days .
Rover is sitting in my shed under several old duvets. A bucket of rat baits under her so no one takes up residence whilst not in use.
The odd run up the road when the sun is out and time provides, is the most that will happen over winter.
Gerald
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The Rovering Member
Well-Known Member
Watch those duvets, you could end up with damaged paintwork by covering it with non-breathable covers.
GRTV8
Well-Known Member
Good point re the duvets and paint deterioration over time.
Hadnt occurred to me.
Ive removed the cat thats now taken up residence on the roof amongst the warm duvets. Placed a cotton sheet over the paint and then back with the duvets.
Car gets better treatment than the owner.
Gerald
72 P6b
Hadnt occurred to me.
Ive removed the cat thats now taken up residence on the roof amongst the warm duvets. Placed a cotton sheet over the paint and then back with the duvets.
Car gets better treatment than the owner.
Gerald
72 P6b