Jump to content

Welcome to TheMalibuCrew!

As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. It's free and it's easy, so don't hesitate to join the TheMalibuCrew Family today!

Mixing Peck Sierra & Prestone LowTox Coolant

Recommended Posts

I’m needing to top off my coolant overflow tank on a 2015 Indmar 427SS LS3 motor. The only Propylene Glycol coolant available over the counter in my area is Prestone LowTox which has <.5% Sodium Nitrite. Can the 2 different brands be mixed and will the Sodium Nitrite harm aluminum block/engine parts?

thank you 

Link to post

When I added my heater last year, I was told mixing of the Sierra brand I used and the stock Malibu type was compatible.  Prestone was the other option I was given.

Link to post
  • 1 month later...

Where are people buying proper marine proplyene glycol coolant?

Struggling to find anything other than the $5 RV antifreeze locally.

Would love to buy at walmart or in 5gal.  Checking walmart today for Lowtox.  



Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...