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200 Series General Forum for the Volvo 240 and 260 cars |
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ATF: To Change Or Not To Change?Views : 1149 Replies : 9Users Viewing This Thread : |
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Jun 17th, 2022, 01:06 | #1 |
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ATF: To Change Or Not To Change?
Hi all,
First post here, but I've been reading avidly for a little while now. Last weekend I acquired a '90 240 GL Estate with the auto 'box (presumably an AW-70). I am currently debating whether to begin changing the ATF or not; it certainly needs it since I don't think it's been done in 135k miles. It does smell burnt and is dark in colour. Upon picking it up, I noticed it was low and topped up about 1L. The car took positively to this, with a much-reduced delay when engaging Drive or Reverse. Shifts are smooth, and I don't believe it's slipping? Certainly, the speed picks up okay across the board, although it does have a tendency to just sit around about 2k with the speed coming up smoothly, above 2k all is normal... Is this slipping? Kickdown works fine, no clunks shifting up or down. So, the question: do I leave in the probably burnt ATF because it just works, or do I begin the process of gradually changing the fluid over? My planned method would be to drain 2L out of the oil return into a large drinks bottle and then replace it with 2L of fresh ATF, drive for 100-200 miles and repeat over time until it starts running considerably cleaner. Thing is, I will need this car pretty much daily over summer, expecting to cover about 1500 miles by September. I'm currently thinking it's pretty much a 50/50 on whether changing the fluid would improve or degrade performance, although the fact that it responded positively to topping up is perhaps a good sign? Sorry for the long post, but better to be thorough, right? Cheers in advance, Adam |
Jun 17th, 2022, 05:56 | #2 | |
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Quote:
The easiest way is to pump 2-3 litres from the fill tube (get a small electric pump, they are not expensive) and refill via the same. 3 or 4 partial changes a few weeks apart should improve the gearbox. Servicing the transmission with new filters is a pretty good idea (as well as cheap and easy) once you have most of the old stuff out. A service kit like this one was only about £20 (from memory): :-)
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... another lovely day in paradise. Last edited by Othen; Jun 17th, 2022 at 06:00. |
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Jun 17th, 2022, 07:20 | #3 |
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Last Online: Feb 16th, 2024 13:43
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Why would you not change it?
At 135k and that age it’s past it’s design life and the fluid will be out of spec. I would change the power steering fluid (you will be surprised how bad it is!), axle oil, coolant etc etc. |
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Jun 17th, 2022, 11:50 | #4 |
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PS (to my post above): a small electric pump like this is good for removing ATF via the fill tube, and also from the PAS reservoir:
https://www.ebay.co.uk/itm/384741523...3ABFBMkOu5lK5g ... about a tenner.
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Jun 17th, 2022, 12:47 | #5 |
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Last Online: Feb 18th, 2024 23:05
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Thanks for the pointers so far, it does seem like the consensus (both here and in previous threads across multiple sites) is to take it slowly with regular partial changes. Generally speaking, maintenance has been carried out on it (I have FSH with it), but just the ATF especially has been neglected, because 'lifetime' fluids, no doubt.
Othren, I do intend to change the filter and clean the pan etc. unfortunately, the lead times are all kinda long, so that'll probs have to wait until September. If anyone has any advice on the dipstick tube removal, that would be great (or should that go in a new thread?). Also, thanks for the link to the pump, looks pretty snazzy I'll make a start in a bit and get a couple of litres out today (hopefully). |
Jun 17th, 2022, 13:22 | #6 | |
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Quote:
:-)
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240, auto, aw70 |
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