Why You fit an Aux Trans Cooler to an 850 / V70 / S70 / C70 - Page 3

CNGBiFuel · Mar 20th, 2017, 09:32

A lot of you get hung-up on the cooler. Any will do. The greater trouble will be in the hoses and mounting the thing.
This should be no more than a £40-50 job + fresh ATF.

A Magnefine would be nice, because even new coller get swarf and crud in them.

CNGBiFuel · Mar 31st, 2017, 08:39

Perhaps I've not made another point clear, provided you're going to be religious about flushing, you've clean fluid in there now, and you don't 'drive', hence you think you'll put a best another 20,000 on the thing before you throw the whole car, you will get away with only flushing.

Pull your trans dipstick now. Expect to see pink, dark pink or dark red. If it's more brown than red, or worse, black? Flush now. However if your car is a keeper, this mod (with or without the stat) should be regarded as one of the essentials. As above any small cooler will be good. It's not critical, you can't really overcool, (at least not in the UK) heat is the killer, so a stat might be overkill for low mileage users, except those in the Yank 'snow-belt' and mile-munchers. A Magnefine too would be very good.

rasvolvo · Apr 2nd, 2017, 02:45

Manual swap should be the ultimate cure.

happy diver · Apr 2nd, 2017, 10:10

Tony Rama · Dec 7th, 2017, 07:44

Hi,

Thanks for all the tech info. Very interesting. I'm new to auto boxes and new to Volvos.

I have a 1999 V70 2.5T. It has the 4 speed auto box. Its done a 150k. The oil is not pink at all. More of a dirty grey. Is the Carlube ATF-U good for this, or is there a cheaper fully synthetic? Excuse my lack of knowledge. I understand you are mainly discussing the 5 speed fitted to later models.

doingitsideways · Dec 13th, 2017, 12:05

If it really is the 4spd, which had pretty much been phased out by '99, then you'll be wanting Dextron 3 as the 'box was designed for Dextron rather than the green Pentosin (sp) stuff in the later ones.

Easiest way to tell your gearbox is:
"E/S/W" buttons - 4spd.
"W" button only - 5spd.

Check the specs on the ATF-U, but it'll probably be fine.

CNGBiFuel · Mar 21st, 2018, 14:09

REMEMBER "lifetime transmission” actually means 100K or the end of the full factory warranty. Doubt this?

Go to your dealer with your failed 20 year old auto box.
Can I come? I could do with a laugh.

Sealed transmissions are a*scam, period. It says "We're building this to fail."

Mar 31st, 2017, 08:39	#22
CNGBiFuel Classic P80 1999 BiFuel Last Online: Mar 6th, 2024 00:34 Join Date: Aug 2012 Location: 48mph Middle Lane M4	Perhaps I've not made another point clear, provided you're going to be religious about flushing, you've clean fluid in there now, and you don't 'drive', hence you think you'll put a best another 20,000 on the thing before you throw the whole car, you will get away with only flushing. Pull your trans dipstick now. Expect to see pink, dark pink or dark red. If it's more brown than red, or worse, black? Flush now. However if your car is a keeper, this mod (with or without the stat) should be regarded as one of the essentials. As above any small cooler will be good. It's not critical, you can't really overcool, (at least not in the UK) heat is the killer, so a stat might be overkill for low mileage users, except those in the Yank 'snow-belt' and mile-munchers. A Magnefine too would be very good. __________________ Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl*dy blah."] Last edited by CNGBiFuel; Mar 31st, 2017 at 08:47.*

Apr 2nd, 2017, 10:10	#24
happy diver Active Member Moment Last Online: Apr 29th, 2023 05:58 Join Date: Jul 2012 Location: Brisbane: perfect for one day, asleep the rest	__________________ 20,000 leagues under the sea diving to adventure in a silent world with my ceiling the waves...Emile

Dec 13th, 2017, 12:05	#26
doingitsideways The Daddy Last Online: Feb 29th, 2024 15:07 Join Date: May 2010 Location: Manchester	If it really is the 4spd, which had pretty much been phased out by '99, then you'll be wanting Dextron 3 as the 'box was designed for Dextron rather than the green Pentosin (sp) stuff in the later ones. Easiest way to tell your gearbox is: "E/S/W" buttons - 4spd. "W" button only - 5spd. Check the specs on the ATF-U, but it'll probably be fine. __________________ XC90 V8 Exec, C70 2.4T Convertible, S70 T5 CD, 850 TDI, 2 x Escort vans and a 2.8i Capri. Clearout has begun, but must continue!

Mar 21st, 2018, 14:09	#27
CNGBiFuel Classic P80 1999 BiFuel Last Online: Mar 6th, 2024 00:34 Join Date: Aug 2012 Location: 48mph Middle Lane M4	REMEMBER "lifetime transmission” actually means 100K or the end of the full factory warranty. Doubt this? Go to your dealer with your failed 20 year old auto box. Can I come? I could do with a laugh. Sealed transmissions are ascam, period. It says "We're building this to fail." __________________ Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl*dy blah."]

Apr 2nd, 2017, 02:45	#23
rasvolvo Junior Member Last Online: Sep 2nd, 2023 05:42 Join Date: Dec 2015 Location: kingston	Manual swap should be the ultimate cure.

Dec 7th, 2017, 07:44	#25
Tony Rama Member Last Online: Mar 18th, 2024 08:27 Join Date: Oct 2017 Location: Watford	Hi, Thanks for all the tech info. Very interesting. I'm new to auto boxes and new to Volvos. I have a 1999 V70 2.5T. It has the 4 speed auto box. Its done a 150k. The oil is not pink at all. More of a dirty grey. Is the Carlube ATF-U good for this, or is there a cheaper fully synthetic? Excuse my lack of knowledge. I understand you are mainly discussing the 5 speed fitted to later models.

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