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Quick winterization question

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  • Quick winterization question

    Repost: Just in the process of winterizing today. First time winterizing my zr409 closed cooling in my 2015 SN200. I've done everything according to PCMs instructions. My question is do the riser/exhaust manifolds have a fill hole? So I can dump some antifreeze down them. The top of the manifold has a small hex head plug that is facing up (towards the sky) and I'm wondering if people use that for filling... any comments appreciated. FWIW I found my 90 SN and my 04 SN to be simpler to winterize however this is my first time with the 409
    New ride 2005 SN 196
    Sold 2010-09-05 - 1990 SN - 610 hrs

  • #2
    I have never opened that hex head plug, one year I removed the engine cover and then disconnected those top hoses above the thermostat so I could put a funnel in the hose at each side and pour some AF into the top of the risers (after draining all the water).
    Normally I just pull AF into the entire engine using the perko. I have a small harbor freight pump that I hook to perko and other end of pump goes in 5gal bucket of the RV anti-freeze. I start engine, turn on the pump and in about 45 second I have AF coming out the exhaust and the 5gal bucket is drained of AF.

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    • #3
      Thanks Infinity! Appreciate the feedback!
      New ride 2005 SN 196
      Sold 2010-09-05 - 1990 SN - 610 hrs

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