Thread: Disco 3/4 Automatic Transmission FAQ - 6 Speed

I am starting to think that the Japanese manufacturers are having trouble with their parts sourcing; almost to the point I am feeling sorry for them.

It appears "farther east, or is it north" manufactured parts are being slipped into their parts supply lines and they have no way of tracking that as the paper work, or more correctly computer work, is also specially handled.

It is kind of like the UL and ULC label thing we have going on here - boxes of the labels are printed up so the local shops can apply as required.

I think Toyota had an experience where just some of the valves in some of their engines were not coming from where they thought they were - what a quality control fiasco when you cannot even backtrack the metallurgy as that is how the game is played in the big leagues.

I do not think EU manufactured goods suffer from that reality yet, so yes, Bosch products probably have better quality control these days than the Japanese - times change - it is a big world out there.

Originally Posted by winaje

After 1500km with the Nulon SYNATF I've had no problems, vehicle running well. FYI Supercheap sold me a 20l drum for $248 including delivery.

Originally Posted by catsman

Also interesting reading on non ZF oils and also Penrites' ATF:

ZF 6HP26 Transmission Introduction - Furitech Automotive

Nulon's website states their ATF shouldn't be mixed with ZF lifeguard and recommend dry fill only...

I was in my local Autopro store and saw a poster for the Nulon Synthetic Multi Vehicle ATF that is a replacement for the Lifeguard 6 ATF. Cost is $55 for 4litres.

I noticed the previous comments above. Has anyone else been using the Nulon product? I noticed Carsman's comments about compatibility with Lifeguard 6 but could not see it on the site - I rang Nulon tech and they claim it is 100% compatible with any Lifeguard 6 still in the box but ......

While this oil is a lot cheaper than Lifeguard 6 and new gearbox is a lot more expensive .

So any user reports on this stuff??

Thanks

Garry

Originally Posted by garrycol

I was in my local Autopro store and saw a poster for the Nulon Synthetic Multi Vehicle ATF that is a replacement for the Lifeguard 6 ATF. Cost is $55 for 4litres.

I noticed the previous comments above. Has anyone else been using the Nulon product? I noticed Carsman's comments about compatibility with Lifeguard 6 but could not see it on the site - I rang Nulon tech and they claim it is 100% compatible with any Lifeguard 6 still in the box but ......

While this oil is a lot cheaper than Lifeguard 6 and new gearbox is a lot more expensive .

So any user reports on this stuff??

Thanks

Garry

Bought 20 litres from Supercheap for $248 delivered, have been using for 10k, no problems at all. I spoke to Nulon chemical and mechanical engineers for an hour before buying, they stated that although they RECOMMEND a dry fill they realise that it's very rare that'll happen, and are sure that the oil will blend with any remaining LG6. I was and am satisfied with their explanations and the performance of the product. The guys who did my steel pan conversion didn't do a full flush (I found about 14l left in the drum) but the vehicle is performing very well, and there is an obvious improvement over the old LG6. I'll have a full flush done soon including another filter, using ONLY Nulon SYNATF, and will report back results in this thread. Based upon my experience so far, it's Highly recommended.

My leaning at the moment (and I am happy to be convinced otherwise) is to use the stuff and even if it is not as good as the the Lifeguard at its price of about $12 a litre I can afford to do a basic oil change of the gearbox when I do the oil change on the engine - every 12,000km. It will be half the price of the engine oil and should keep the gearbox nice and fresh.

Garry

Garrry , we sell Total oil and i too will be doing the same thing - engine change =gearbox change .

Will, out of interest, had your gearbox had prior fluid changes in it's life that you know of ? Did the Nulon improve your shift quality ?

I'm in the position of having reduced shift quality and a suspected squealing TC - advice is varied and confusing but I am going to take a first principles approach and start by changing the fluid - if price was no issue, what would your view be Nulon or LG6 ?

I like the idea (noting my sometimes spirited driving and regular towing) of routine (annual) dump and change which as you and Gary say is far more economical with something other than LG6.

Mick - does sound that a ATF change is needed and maybe a dose of Dr Tranny for good measure as well.

Garry

Originally Posted by Epic pooh

Will, out of interest, had your gearbox had prior fluid changes in it's life that you know of ? Did the Nulon improve your shift quality ?

I'm in the position of having reduced shift quality and a suspected squealing TC - advice is varied and confusing but I am going to take a first principles approach and start by changing the fluid - if price was no issue, what would your view be Nulon or LG6 ?

I like the idea (noting my sometimes spirited driving and regular towing) of routine (annual) dump and change which as you and Gary say is far more economical with something other than LG6.

I bought the vehicle at 310k, it had been meticulously book maintained to that point, BUT had not had the fluid changed, becuase it's not in the book (stupid LR and their "sealed-for-life (of the warranty)"). The old fluid was pretty bad according to the trans place.

If I hadn't had to worry about money at all, I'd put a steel pan on, and do a full flush with LG6, then do a filter change and another full flush with LG6 10k later. However, I would not be surprised if that came to nearly $2k in a capital city drive in/out.

Too rich for my pot. I noticed a huge improvement all round from a part flush with about 6 litres of the Nulon. I'm expecting it to be better still when the full flush is done with the rest of the Nulon, when I can afford it (money is a consideration for me). If I was doing any heavy work with it, and I'm not, I'd full flush and filter change with Nulon every year. As it is I'll probably do it every 2 years. I have yet to add my 2 tubes of Dr Tranny.