Coolant leaking from heater core.

[abscate]

If you disconnect you hoses at the firewall, plug with rubber stoppers.

Now flush the core with a hose from the firewall side….this makes any spill inside the car water, not coolant.youcanjust let it dry

[vtl]

What abscate said, but flush with air (shop vac in reverse). This makes air "spills" inside the car, not water or coolant I got it completely dry, not a drop.

Ah, your P2 experiences its half life My 2005 has only original fuel pump and some rubber bushings in the rear subframe, and that's it: everything else was fixed, rebuilt or replaced.

[erikv11]

I found the o-ring and retaining clips on fcp Euro. For the O-rings, they have OEM, and Geunuine Volvo. Since the OEM ones are 10x cheaper than the Genuine ones, is it fine if I get the OEM ones?

At FCP, where I shop a lot because they have great customer service and reasonable prices, the equivalent to the factory Genuine Volvo part is the one they call OE.

Their designation OEM just means the company makes other at least one other part that is OE. In other words, the OEM designation is not much use at all. Look for the OE designation, those are fine to buy when you want the Volvo part.

[02V70]

I was going to get the OE o-ring, but it had a bad review saying that it was hard to fit on the pipe.

[vtl]

This is what you want, in fact. When it gets in, it won't leak for another 10-15 years.

Add some silicone lube and try to push the pipe as square as you can. I didn't have any problems, had to do it twice (in two cars), went in without much hassle.

[EngineeringBloke]

OE - original equipment
OEM - original equipment manufacturer

So OE is what came with your car but OEM parts should match.

An OE bulb would be replaced with a new bulb, perhaps an OEM one or an aftermarket one.

https://www.clinecollisioncenter.com/wh ... em-and-oe/

I think the terms are used interchangeably.

[erikv11]

OE - original equipment
OEM - original equipment manufacturer

So OE is what came with your car but OEM parts should match.

An OE bulb would be replaced with a new bulb, perhaps an OEM one or an aftermarket one.

https://www.clinecollisioncenter.com/wh ... em-and-oe/

I think the terms are used interchangeably.

Unfortunately, no. FCP is very explicit about how they use these terms, and it is not as you described (https://www.fcpeuro.com/page/oe-academy)

OE - original equipment
OEM - original equipment manufacturer for at least one part on the vehicle (but not necessarily the part you are buying)

At FCP, almost always OE ≠ OEM

Other sites/vendors can and will use the terms differently. The bottom line is these are marketing terms not physical constants of the universe. Vendors can effectively use them any way they choose. Further clouding the issue, some sellers (but not FCP!) will use them unscrupulously. The free market will sort it out (ha!). You need to check usage case by case.

[vtl]

Further clouding the issue, some sellers (but not FCP!) will use them unscrupulously. The free market will sort it out (ha!). You need to check usage case by case.

Take it even further: a lot of aftermarket vendors leave milled scars on their parts on purpose as if they were obliged by law to remove any brand names from these parts. Just to confuse the buyer. "Oh, look, it was probably VOLVO imprinted here, so this "<Reputable western country> Parts" brand must be really making these parts for VOLVO!"

[cn90]

I usually ignore these words: OE, OEM as they should be taken with a grain of salt.

My approach:
- If the factory part has the name on it, then it is proof of genuine part supplier. Examples: Radiator has Valeo name on it, alternator could be Bosch or Valeo, heater core Behr, Thermostat Wahler.

- When the mfg name is not available, best is to err on the safe side, which is buying Volvo genuine part.

- Another approach is forum feedback, if forum people tell me part with XYZ brand name is good and lasts some 8-10 yrs, it is good enough for me.

[02V70]

This is what you want, in fact. When it gets in, it won't leak for another 10-15 years.

Add some silicone lube and try to push the pipe as square as you can. I didn't have any problems, had to do it twice (in two cars), went in without much hassle.

How much does the lube base matter? I don't have anything with a silicone base, but I have lithium and petroleum.