RX - 1st Gen (1999-2003) Discussion topics related to the 1999 -2003 RX300 models

Replace Radiator without Discharging A/C System

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Old 03-14-16, 06:27 PM
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carguy07
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Thanks!
Old 03-14-16, 09:22 PM
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salimshah
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One word of caution. Add coolant with the engine cold, or slowly with the engine running. Do not add cold coolant to hot engine, with the engine shut off.

Salim
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Old 03-15-16, 05:28 PM
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thaeleelyr
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Originally Posted by salimshah
One word of caution. Add coolant with the engine cold, or slowly with the engine running. Do not add cold coolant to hot engine, with the engine shut off.

Salim
Good advice.
Old 11-16-20, 02:24 PM
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aam2460
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Originally Posted by salimshah
One word of caution. Add coolant with the engine cold, or slowly with the engine running. Do not add cold coolant to hot engine, with the engine shut off.

Salim
I actually did that once before I see your post. Why, what would happen?
Old 11-17-20, 12:31 PM
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salimshah
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Originally Posted by aam2460
I actually did that once before I see your post. Why, what would happen?
The concentration of cold coolant in hot engine can create cracks. The running (circulating coolant) mixes with cold new coolant and prevents cold spots.

Salim
Old 12-21-22, 06:09 AM
  #36  
Jimr5454
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.I thought I'd do a update.i did find a radiator at yard and it came with coolant line I needed and so far it's been great..thank you all for the help and ideas it's good to know people still take the time to help eachother..
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