XC90 transmission cooler on S80?

SlowLane · Post by **SlowLane** » 23 Jul 2020, 16:03

Anyone tried adapting the external transmission cooler from an XC90 to an S80? I figure those would be more plentiful at the Pick'n'Pull than the native S80 external cooler.

The drawings seem to show that they are similar but different in the area of the hose connections at the cooler, but perhaps the XC90 one is "close enough" to work.

bronco · Post by **bronco** » 23 Jul 2020, 20:35

What if there is gunk in it? pencil shavings or bird lime? Ok friction material etc from the transmission it was last attached to?

Friends don't let friends reuse transmission coolers . That is originally a Ford rule(E4OD) but it applies to every brand equally

Post by **MoVolvos** » 24 Jul 2020, 13:08

SlowLane wrote: ↑23 Jul 2020, 16:03 Anyone tried adapting the external transmission cooler from an XC90 to an S80? I figure those would be more plentiful at the Pick'n'Pull than the native S80 external cooler.

The drawings seem to show that they are similar but different in the area of the hose connections at the cooler, but perhaps the XC90 one is "close enough" to work.

The only thing I would not recommend is adding an additional half a quart each time you refill if the level was correct to begin with.

Volvo XC90 V8 TF-80SC OEM Transmission Cooler Install / Flush

*

SlowLane · Post by **SlowLane** » 24 Jul 2020, 23:40

bronco wrote: ↑23 Jul 2020, 20:35 What if there is gunk in it? pencil shavings or bird lime? Ok friction material etc from the transmission it was last attached to?

Kooler Kleen! (okay, get past the deliberately egregious spelling. You'd almost think it was a Stan Lee character)

Post by **SuperHerman** » 25 Jul 2020, 00:33

Generic oil coolers are cheap enough - come with all the fittings.

Out of curiosity, why do you want to add an oil cooler? Does the wife use the Silver Flash for towing?

bronco · Post by **bronco** » 25 Jul 2020, 07:07

SuperHerman wrote: ↑25 Jul 2020, 00:33 Generic oil coolers are cheap enough - come with all the fittings.

Out of curiosity, why do you want to add an oil cooler? Does the wife use the Silver Flash for towing?

I used to regularly rebuild the early Ford F series 4 speed overdrives The E4OD was an outgrowth of the venerable C6 that had been around for decades. They took the main setup from the C6 and added an overdrive . It took them 5 years to get the transmission to a point where it was halfway reliable. Pickup transmissions see a lot of hard use and there was a lot of clutch wear and a lot of material wound up going unfiltered to the coolers and plugging the auxiliary and radiator cooler up pretty well. The fluid coming back from the cooler would spray on the planetary gear to cool and lube it. So when the coolers plugged that didn't get lubed and got hot and started to disintegrate and spewed their guts into the cooler and radiator before ceasing to function.

So a lot of guys would need to get a transmission rebuilt and they would put it in and drive off but the old coolers would then either be plugged and fail to lube the new planetary or not be plugged and dump all the grit they contained right into the new transmission.

Now its true that the car in the junkyard may not have had a bad trans but its really never worth finding out the hard way .

never reuse a cooler if the transmission blew up is my rule and never swap a cooler to another vehicle just put a new one on and poke a hole in the old one just in case

SlowLane · Post by **SlowLane** » 25 Jul 2020, 12:51

SuperHerman wrote: ↑25 Jul 2020, 00:33 Generic oil coolers are cheap enough - come with all the fittings.

Out of curiosity, why do you want to add an oil cooler? Does the wife use the Silver Flash for towing?

No, just idle curiosity. Having invested a fair bit of cash and sweat equity in this transmission rebuild, I was thinking of ways to increase the lifespan, and cooler ATF came to mind. But I have no evidence that the old ATF was getting too hot. It came out nicely clear and red, but it wasn't all that old. Think I replaced it about two years ago.

Just thinking of ways to make more work for myself, I guess. Not like I don't have a backlog of projects. The poptop on the Westy needs some TLC.

Thanks to you and bronco for the well-reasoned advice.

bronco · Post by **bronco** » 25 Jul 2020, 13:20

https://www.amazon.com/Mishimoto-MMOC-F ... B0035Z3NUG