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Malibu 21 VLX Coolant Change Cycle...


WhiteWaterWeb

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Hi all - I hope you are all staying safe and hanging in there; crazy days indeed. I'm a Canadian who is lucky enough to be able to get his boat in the water this spring/summer season (with everything being locked down) but getting a coolant change via a certified mechanic might be difficult. I take crazy good care of the boat and all other maintenance is done on it, but Malibu recommends a coolant change every two years. The boat is a 2018 and only has about 95 hours on it...can I get it in the water and do it later when things open up?

I don't want to risk doing anything more than cleaning my boat by me - I let licensed mechanics do all of the other stuff.

I look forward to your feedback.

Cheers.

Jody

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I went five years with my old fashioned green coolant, and I mainly did it to keep up with rust protection, which seems to me to break down first. 

I understand that I don't need winter protection like some of you do. 

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my boat is closed cooled and I don't change every 2 years.  I think 5 years is more reasonable.   All i do at the end of the year is check the freeze protection level and if it's good i call it good.

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On 4/29/2020 at 5:56 PM, ahopkinsVTX said:

Do you change the coolant in your car/truck every two years? 
 

I think that frequency is a bit extreme. As long as it’s not low and or smells burnt I wouldn’t worry about it. 

Ok, thanks. And I agree...I called a Malibu dealer and they said they never do it - not sure why Malibu says to do it in the regular maintenance schedule. Take care.

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  • 4 weeks later...

Hi all, what does everyone use for coolant? Is there a propylene glycol option out there that is not made by Indmar, but is a good substitute? 

Thanks.

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On 6/1/2020 at 8:42 AM, WhiteWaterWeb said:

Hi all, what does everyone use for coolant? Is there a propylene glycol option out there that is not made by Indmar, but is a good substitute? 

Thanks.

Peak Seirra is compatible but green not pink. It will mix fine. I added a heater this year and took several days to get this answer when I ask it. Had to add about a gallon to fill my new heater lines and core after install.

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