DIY: Radiator Hose Replacement
 

Hey guys,

We put together an instructional video for replacing the radiator hoses on your 2009+ 370Z. The guide is broken down into numerous steps and ensures success even for beginners. :tup:



Thanks for watching! For more information about the Mishimoto hoses installed in the video here. :tiphat:

Good video.

Thanks!

towards the last part when you said to turn on the engine and turn the heater on full blast, are you supposed to do that with the radiator cap off and the funnel in?

Looks like that DIY video shows a Lisle Spill Free Funnel.

Yes and should be without problem. The purpose of this is to "burp" the system to purge any trapped air inside. Once this is done and the radiator appears topped off, check again frequently during the week to make sure the level is good. And to make no mistake in the 50/50 solution, just go to Nissan for their pre-diluted blue coolant.

Just replaced my radiator a few months ago. You need to leave the radiator cap off initially. Also make sure the thermostat opens as it will most likely need a little more coolant once it does.

If you need a cheap funnel just cut the top off a 2 L bottle. Fits the fill neck perfect on our cars.

what about the prestone 50/50 you can get at your local pepboys?

or maybe i can just reuse the old coolant i drained out?

I suppose you can go the over-the-counter route, but just to retain warranty, I'd stick with Nissan blue personally. As for reusing old fluid, don't because old fluid contains contaminants which you don't want to keep circulating through your system. Besides, you get a piece of mind if you introduce new fluid in knowing that no further maintenance is needed until quite some later down the road.

Some good advice here guys, thanks for chiming in! Let me know if you have any other questions about the install or our products. :)

so i have a 2013 370z and the way my coolant reservoir is set up is different. i have two radiator caps and i read somewhere that the cap thats on the reservoir is the pressurized one and the one closer to the engine isnt. so which hole do i use to fill it up with coolant and to "burp" the system? does it matter?

It's not different. There's only one pressurized cap which is silver with a warning label on it. The reservoir tank has black plastic cap. Refill via the silver cap but only when the vehicle has cooled significantly.

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it is different. you're talking about older model 370's. they changed the set up in the newer ones strating with i think 2011's?? click on the link and check out the pics.

Ah! I stand corrected and see what you mean now. Regardless, you'll need to tale the cap off closest to the engine with due care (use a rag to prevent scathing). You'll want to take the reservoir cap off too to drain the old coolant that's pooled in there. At least on the 2010 model year, only two 10mm bolts hold it in place, and you can tilt the tank to dump the fluid.

So when I burp it I leave the cap off and the funnel in the hole closer to the engine correct?

Correct. Burping the system is actually as simple as squeezing the large hoses that connect to the radiator to the engine by hand. You can hear the gargle as fluid is pushed through and also see the fluid go down at the cap.

so if you do this method do you still have to turn the heater on full blast while the engine is running as what was mentioned in the video?

Yes to ensure it cycles throughout the block.

how do you make the thermostat open?

Start the car and let it run. Keep an eye on the coolant in the filler neck. Once the thermostat opens you should see a change in the coolant level.

Will my NA Z see a benefit from these hoses?

Nope, although silicone will last a lot longer than rubber. And you want to buy them from Z1 or Samco. Mishimoto is the lowest level of Chinese garbage you can put on your car.