Author Topic: Backflush heater core  (Read 1411 times)

Online Rickf1985

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  • Posts: 5392
  • Member since: 2013
  • I own: a Motor Home
  • Year: 1989
  • Make: Winnebago
  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: Backflush heater core
« Reply #25 on: February 11, 2019, 02:32 PM »
Now would be a good time to put in a new 190 degree thermostat. You should get heat fairly quickly, within 3-4 minutes. Full hot heat in even cold weather in 5 minutes. If that is not happening then the thermostat is either sticking open or it is opening too soon.

Offline BamBam

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  • Posts: 61
  • Member since: 2018
  • I own: I don't own one but I want one!
Re: Backflush heater core
« Reply #26 on: February 11, 2019, 07:20 PM »
Throw in a bottle of Prestone Rust Inhibitor in the system to help keep it in check. Good Luck

Online Rickf1985

  • *
  • Posts: 5392
  • Member since: 2013
  • I own: a Motor Home
  • Year: 1989
  • Make: Winnebago
  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: Backflush heater core
« Reply #27 on: February 11, 2019, 07:53 PM »
the proper ratio of antifreeze will prevent rust. I am a firm believer of less additives the better. That is as bas as gas line cleaners and antifreeze. 90% of the gas at least in the US has alcohol in it. THAT is exactly what the gas line cleaners and antifreezes are. That was great back in the days before alcohol but now it is redundent and can also end up giving you too much alcohol in the system and screw up diaphragms and lines.

 

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