Hokay, so. I just tried to flush my coolant, and to my surprise, the little plastic drain screw is stripped beyond recognition... how would I get it out? I've tried everything that came to mind haha. Or should i just remove the undertray and pull the lower rad hose to drain it?

 

Rather than using the drain plug from the radiator, there's another way of doing a cooling system flush. Here's single post link 'Mazurfer' made that's not a D.I.Y. which doesn't require long instructions to follow.

 

This will cause more coolant to come out right? More than if I just drained from the bottom of the rad? Which is good of course! Haha so I just do the engine bolt, drain it, and then refill through the overflow? Oh and thanks Grace Excel.

 

how much coolant for a full flush?

 

Removing that Bolt will not get it all out, you still need to drain the radiator. Just notch the plug with a blade, use a flat head to remove it, and then when your done put in a new drain plug.

I just removed my engine last night, trust me that doing the bolt will not drain it all.

Usually 2 gallons is good for a flush, but having three gallons available is your best bet.

 

Also, if you don't drain it from the radiator first, you will have a lot stronger of stream shooting out of the engine block making a mess...if I were you I'd fix it first and drain the radiator and leave the plug out while draining the block after you've done that.

Also if you have no other option, you better make some sort of shield to put against the frame member the plug on the block is facing to help direct the splash downward into what ever you have for catching the fluids.

 

Hmmm, I didn't know that I only drained it from the plug when I replaced my OEM radiator. If you haven't started with your drain and couldn't open the drain plug, you should also look for a replacement. Anyway, you could open the cap and jack the front and allow gravity to take over if you really have to do it from the engine. It'd be as messy if you'd pull the bottom radiator hose, right?

 

Well, I still haven't been able to get the plastic one out. But I'll keep trying. I did drain it from the bolt above the oil pan, however, and it wasn't so bad. I do have a huge drain pan though, so maybe that's why it didn't flood my garage haha.

But the reason I'm doing this is because one of my coolant hoses started leaking and I had air in my system so I had to bleed it and get all the air out, so I figured why not flush it too? But my system was flushed about 10k ago, so it doesn't have to be completely thorough.

 

I'm assuming pulling the lower rad hose would be pretty messy, but I didn't do that. I just drained it from the block. I just wish we had better access to our rads, although the v-mount is pretty awesome.

 

Did you use distilled water to complete the flush?

 

I did indeed. I did just distilled water, then distilled water with rad flush, then just distilled water again, then added my new coolant.