How do "YOU" change the antifreeze
02-17-02, 12:00 PM
#1
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How do "YOU" change the antifreeze
Well, I am in need of changing the anti freeze cause it has been a while. I have not done it on a Rx7 yet (I don't think it is too different than normal if at all)..but ...I have been told not to flush the system with those flush chemicals and to use vinegar??? what is the process?..drain , fill with 75% water, 25% vinegar, let it run for how long etc...any one else hear of this way to do it?.. come on , don't laugh, someone mentioned to do this..somewhere down the line. Another big question is : what hose do you replace??.. the upper and lower hose I know...but what about any other hoses??there seems to be a couple in few different hoses in there.. anyway....any help on this matter would be appreciated........thanks
02-17-02, 12:59 PM
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hmm i have never heard of using vinager. but the coolant hoses you should check or maybe replace if there orginal are the ones that go behing the engine by the fire wall, depending on the model there is 1-3 hoses.
02-17-02, 01:03 PM
#3
Ewww yucky Vinegar stinks 
Only thing I can help you here is tell you were the drain bolt is, but you probally already know where ... All I do is open the drain up let it drain in a pan or driveway gravel. Then put a hose in the radiator flush it with tons of water...
Only thing I can help you here is tell you were the drain bolt is, but you probally already know where ... All I do is open the drain up let it drain in a pan or driveway gravel. Then put a hose in the radiator flush it with tons of water...
02-17-02, 02:00 PM
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i ain't heard of using vinager either.
how, well that depends. if it's been done on a regular basis then i just drian the rad, remove the low hose and let the engine drain, and flush the rad with a hose. if it's been a while then i remove the t-stat and flush the engine with a hose. amazing how much crap can accumulat there if you don't perform routine maintenance.
change the heater core hoses too! they should be running long the pass side frame rail. i have never changed the lines on the oil cooler. perhaps i should look into that...
this reminded me of an off road story (got lots of them). i'll post it in the off topic section.
how, well that depends. if it's been done on a regular basis then i just drian the rad, remove the low hose and let the engine drain, and flush the rad with a hose. if it's been a while then i remove the t-stat and flush the engine with a hose. amazing how much crap can accumulat there if you don't perform routine maintenance.
change the heater core hoses too! they should be running long the pass side frame rail. i have never changed the lines on the oil cooler. perhaps i should look into that...
this reminded me of an off road story (got lots of them). i'll post it in the off topic section.
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02-17-02, 07:45 PM
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Geez... I haven't flushed my sytem in years... I need to do that and I need to change the never-ever-changed-rear-axle-fluid, plus the transmission fluid... SO MUCH TO DO AND SO LITTLE TIME!!!
02-17-02, 11:15 PM
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When I did it, I pulled the bottom radiator hose because I didn't know about the plug. Filled it with water, ran it till it was warm, drained it via the hose again, and filled it with 50/50.
Now that I work at the shop, I'll just use the machine.
You warm up the engine, releive pressure with the radiator cap, pull the top radiator hose and hook it to the machine, Hook the machine to the radiator where the top hose went. Then fill the machine with the rated capacity of the system. Shut the machine off when it's empty and top off.
Now that I work at the shop, I'll just use the machine.
You warm up the engine, releive pressure with the radiator cap, pull the top radiator hose and hook it to the machine, Hook the machine to the radiator where the top hose went. Then fill the machine with the rated capacity of the system. Shut the machine off when it's empty and top off.
02-18-02, 02:38 AM
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Originally posted by Pele
When I did it, I pulled the bottom radiator hose because I didn't know about the plug. Filled it with water, ran it till it was warm, drained it via the hose again, and filled it with 50/50.
Now that I work at the shop, I'll just use the machine.
You warm up the engine, releive pressure with the radiator cap, pull the top radiator hose and hook it to the machine, Hook the machine to the radiator where the top hose went. Then fill the machine with the rated capacity of the system. Shut the machine off when it's empty and top off.
When I did it, I pulled the bottom radiator hose because I didn't know about the plug. Filled it with water, ran it till it was warm, drained it via the hose again, and filled it with 50/50.
Now that I work at the shop, I'll just use the machine.
You warm up the engine, releive pressure with the radiator cap, pull the top radiator hose and hook it to the machine, Hook the machine to the radiator where the top hose went. Then fill the machine with the rated capacity of the system. Shut the machine off when it's empty and top off.
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