Friday, August 21, 2009

Cracked radiator

I'm right in the middle of my qualifier exams at the moment -the exams every PhD student has to take in order to keep receiving funding, and to stay in the programme. It's a two week gruelling event ended by an hour-long presentation on a topic you've only known for two weeks, during which professors get to grill the hell out of you asking everything from 'what does that electron do' to 'why are my pants blue?' It's murder.

Anyway, car stuff doesn't stop for anything. So I thought I'd share some recently acquired experience with you so you don't have to pay $60 to be towed 15 miles:

When your radiator starts leaking, PATCH THE LEAK OR REPLACE THE RADIATOR!!

Here's what the radiator (in my Altima) was doing one day:


In the video you'll notice a small bubbling leak coming from the top plastic part of the radiator, right where the Nissan logo is. I didn't think too much of it and just patched it up with some tape. I figured I'd replace it eventually.

I drove up to Jersey and back (4 hours each way), but on the return trip noticed that my AC wasn't working too well. Looking down at the gauges I saw a needle way past H, and eventually saw smoke coming out of the hood. So I turned off the engine, pulled over (without power steering - quite difficult in this car), and waited for AAA. Here's what the radiator looked like afterwards:
Note that this crack spans from the centre till way into the left side of the radiator (sorry, cell-phone pic). Thinking about this for a second, you can understand why: a radiator at high temperatures does generate some steam inside. Steam builds up, leading to pressure which was trying to vent through the pinhole. At one point it just got so hot and the pressure was so high the radiator gave way and cracked. Not bad, actually, for a 16 year old radiator.

The radiator was very easy to take out (collect your coolant properly! I let it run and later found squirrels drinking from it. If you don't want to chase squirrels all day collect it properly.) All-in all it would have taken me about an hour to replace.

Not a huge deal, RockAuto was willing to ship a new radiator to me for $95 (everything included). But time was of the essence, so I decided to go to Advance instead. Their website said a new radiator was $127, but the in-store price was $137 ("Yup, that's the store price" the sales associate told me when I asked why the bill was so high). I guess I was willing to pay $30 more, but $40 was starting to push it, especially if you consider the $60 towing charge. Also the principle of the matter didn't sit well with me. I contacted Advance about this (to bring it to their attention, not to demand a refund) and they got back to me on this, apologising for the incident and offering a gift card. Oh, and make sure you get the right radiator for your car (manual vs automatic, not the same!!), which set me back another day (plug any extra holes with silicone).

You should know this is unlikely to happen in an MG radiator, mainly because it's entirely metal. Though pin-hole leaks can happen, pressure will not build up the same way it did in my Altima. A good radiator cap should prevent any explosions, which should also be minor seeing as metal is much stronger than plastic (and a pin-hole will remain as such for much longer).

They really don't make things the way they used to.

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