99 S70 Base. Bad decision with aftermarket Radiator

Post by **abscate** » 12 Aug 2015, 12:48

You need hose resistant to oil, so go to your FLAPS and ask them to help you out.

dux02v70 · Post by **dux02v70** » 12 Aug 2015, 13:29

There is very little pressure in the hoses and cooler for the transmission. The fluid in this part of the system is on its way back to the sump so it is vented to the atmosphere at the end of the return hose. The only pressure developed is from the resistance to flow caused by the hoses and the cooler. Double clamps on a straight hose will work, although barbed fittings are of course always better. On my car, I pulled the rubber hose off the steel line in the return hose at the radiator to install a Magnefine filter and only used hose clamps. No leaks.

Post by **tryingbe** » 12 Aug 2015, 14:42

ashlee2319 wrote:Alright, so I need one of those barbed couplers too. I have been using heater hoses from autozone, but I will buy trans hoses. Is it okay to clamp the trans hose onto the lower metal hose (original trans cooler hose)? I found another site of leakage.

Depends on the radiator, I know the barbs only worked on my Autozone Radiator and won't work with Nissen or OEM Volvo Radiator.

You definitely do NOT want to use heater core hose for ATF.

ashlee2319 · Post by **ashlee2319** » 12 Aug 2015, 19:04

I mentioned the 'oil deteriorating a hose' thing to the autozone guy but didn't know anything about it. I will acquire all of these items hopefully all should be good:)

Post by **tryingbe** » 12 Aug 2015, 19:15

ashlee2319 wrote:I mentioned the 'oil deteriorating a hose' thing to the autozone guy but didn't know anything about it.

Parts guy usually knows every little about car parts.

Post by **erikv11** » 12 Aug 2015, 21:32

And even less about cars.

ashlee2319 · Post by **ashlee2319** » 13 Aug 2015, 12:32

tryingbe wrote: You definitely do NOT want to use heater core hose for ATF.

They were already looking sad after only a couple months.

Took those off. Bought 2 barbed couplers. Trans cooler hose. Now my only problem is slicing the metal sleeve from the OEM trans cooler hose so I can clamp my new hose to the metal.

Post by **erikv11** » 13 Aug 2015, 13:12

People cut the sleeves with a Dremel or angle grinder all the time, for example see:

https://www.matthewsvolvosite.com/forums ... hp?t=55794

ashlee2319 · Post by **ashlee2319** » 13 Aug 2015, 14:43

Perfect. And does it matter what kind of clamps I use?

Post by **abscate** » 13 Aug 2015, 15:14

I like Stainless steel closed band his clamps that don't cut into the rubber like the notched ones but if you double them up it wont matter what you use.