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1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

StubZz
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Year and Model: 1998 V70
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StubZz

1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Post by StubZz » Fri Aug 18, 2017 3:30 pm

Hello All!

I am new to this site, but I've come here before and seen some helpful threads!

My '98 V70 was leaking a lot of coolant recently, I decided to take it to a shop nearby that specializes in radiators and mufflers. After the replacement it was all good for a few days. Then it started leaking transmission fluid from the bottom transmission oil cooler hose connection. It is a slow leak, so I'm not too worried about it as of now. It was not leaking before the replacement. After the replacement the guy that worked on the car said we should get some new transmission cooling hose retainers, as the old ones were incredibly corroded (https://www.fcpeuro.com/products/volvo- ... er-6842411 <-link to the part on FCPEuro, part number is 6842411). I've also driven the car around for 30 minutes and checked the fluid oil (as per the instructions in the owners manual) and the fluid was at the max line if not above. Will the leak resolve itself after the fluid level has reached the max line, is it a problem with the radiator itself, or will putting the new retainers on resolve it?

Thank you for any help you will provide, it means a lot to me! :D

~StubZz

tryingbe
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Re: 1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Post by tryingbe » Fri Aug 18, 2017 3:53 pm

85 GLH, 367 whp
00 Insight, 72 mpg

StubZz
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StubZz

Re: 1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Post by StubZz » Fri Aug 18, 2017 3:55 pm

tryingbe wrote:
Fri Aug 18, 2017 3:53 pm
Replace them all.
https://www.fcpeuro.com/products/volvo- ... 0-6842411k
Alright, thank you!

scot850
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Re: 1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Post by scot850 » Fri Aug 18, 2017 4:35 pm

Also be careful when fitting the hose retaining cage. They are orientated. If fitted the wrong way around they will leak and can blow off as a friend of mine found out the hard way!

Also, some cooler hoses not have 2 'o' ring seals not only one?

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

StubZz
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Re: 1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Post by StubZz » Fri Aug 18, 2017 5:44 pm

scot850 wrote:
Fri Aug 18, 2017 4:35 pm
Also be careful when fitting the hose retaining cage. They are orientated. If fitted the wrong way around they will leak and can blow off as a friend of mine found out the hard way!

Also, some cooler hoses not have 2 'o' ring seals not only one?

Neil.
Alright, I will be careful with that! I am not sure about the 'o' rings, I believe it is one set for both though.

brunocerous
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brunocerous

Re: 1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Post by brunocerous » Sun Sep 17, 2017 5:33 am

How did the cooler line replacement go?

I've been getting the same quarter-size fluid stain on our driveway since doing a drain-and-fill, and yesterday located the culprit: Leaking transmission cooler hoses where the rubber meets the metal crimp.

It's been getting worse, so I've got another project ahead of me!
2004 XC90 AWD
2000 V70, base, MT, 'The Silver Bullet'
1998 V70, base, AT, 'Blue Steel'
1998 V70 T5, AT, project
1999 V70 XC AWD, AT (RIP)
1998 S70 T5, AT (RIP)

StubZz
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Re: 1998 V70 Leaking Transmission Fluid from Oil Cooler Connection to Radiator

Post by StubZz » Fri Dec 08, 2017 12:05 am

brunocerous wrote:
Sun Sep 17, 2017 5:33 am
How did the cooler line replacement go?

I've been getting the same quarter-size fluid stain on our driveway since doing a drain-and-fill, and yesterday located the culprit: Leaking transmission cooler hoses where the rubber meets the metal crimp.

It's been getting worse, so I've got another project ahead of me!
It went fine! I now have no transmission fluid leaking!

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