Wankel7

I am going to be converting to Evans coolant. And my biggest question is this.

I know at some point I am gonna have to drain the coolant for some reason or another.

So, at $27 a gallon I do not want to spill a DROP of this stuff. I am going to put a petcock in the radiator so I can recover that fluid.

But what about the block drain in the drivers engine mount. Anybody install a petcock there?

Or a better way to recover the Evans?

James

Syonyk

How often are you planning to drain the engine block's coolant? Personally, I wouldn't bother - if I'm draining the engine block, I'm probably doing some expensive work anyway (like a rebuild) and a few $$ for more coolant wouldn't be a big deal (and it should probably be changed out anyway).

Otherwise, I'm sure you can get the tap size, and have someone fabricate something that fits in and will allow you to cleanly drain the fluid. I'm imagining something along the lines of a brake bleeder type setup, only larger.

-=Russ=-

Wankel7

Man this stuff is 27 bucks a gallon And , it is life long...since there is no water there is no corrosion.

I am not sure what angle to go with this.

I know autometer has a good selection of metric brass fittings for all of its gauge senders....there website is being a POS right now.

James

iceblue

petcocks do and will leak in time.

What is wrong with the drain plug on the rad? After that and the hoses are removed I dont see how to get the coolant out of the block. I cant see that being more then a gallon out of mearly neer 2g coolant system. So at worst if the motor comes out to rebuild it as only reson I can see, and you lose maybe 27$ worth, not that bad considering your spending atleast 600$ on rebuilding it.

RotaryEvolution

iTrader: (30)

petcocks cost money, time and effort is worth money, time worrying about saving a few $ is worth money.

coolant these days is $10+ a gallon, the least of my worries would be saving a couple of bucks and worrying about saving some fluid that WILL have debris and other contaminants in it once it has gone through the motor.

my advice: quit worrying about trying to save old fluids.

Wankel7

Yeah, taht is a good point....at that point you can drain the block once it is on the engine stand....good call

James

Wankel7

I'm talking about Evans which is 27 a gallon plus shipping

James

RotaryEvolution

iTrader: (30)

yes i know, so the difference is $20 or so. how much is a petcock? gas to get the petcock? time searching for the right petcock? time posting about worrying about saving some old coolant?

my point is i try to not worry about little things like this but then again i guess my time is worth more than most since i'm older than most around here.

Syonyk

Several other people made the point I was trying to make a lot better than I apparently did.

Yes, $27/gal is a lot. Yes, it would be nice to save it and reuse it. However, the cost to do this may end up being a lot more than the actual money saved. Kind of like buying a hybrid to save money on gas when you have a perfectly good RX-7 floating around.

-=Russ=-

Wankel7

LOL, yeah I see your point.

I will just put a drain **** on the radiator. The odds of it leaking are prob gonna be lower since I am gonna run a zero pressure radiator cap.

If the engine blows....shudder....drain the rad. out ....take the engine out and pull the block drain on the stand.

This coolant doesn't go bad since there is no water in it.... so not recovering it would be like throwing away a bathroom towel....its still clean after one use.....

James

Syonyk

One thing I would suggest: Since you seem to have a phobia of losing any coolant, you might want to spend a bit of money while you have the system drained and replace all your coolant lines if you haven't done so recently. Especially the heater core/engine block hose that gets oil on it, and the ones under the throttle body. A zero-pressure coolant system will still have *some* pressure in areas (or it wouldn't flow), and I suspect finding a leak will be a lot harder without the ability to look for the plume of steam.

-=Russ=-