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Old 10-03-2016, 10:10 AM
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mzimme mzimme is offline
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Winterizing Q&A

Let's get a thread to answer questions about the winterizing process.

My first question, when winterizing an Indmar 5.7 motor, I purchased Rotella T 15w40 (If I remember correctly) but it's Diesel oil. Is this okay? My google searches said yes, but I want to double check with the pro's.

I'll also add, living in Kansas City we get pretty cold air. I've had that -50 pink antifreeze sitting in my garage before, and it was frozen into what looked like a slushy. This was in air temps that were just single digit... we're not talking the extreme cold you see up north further sometimes. When I saw that, I stopped using the pink stuff and just drain the boat, and leave it dry. Haven't had an issue yet (knock on wood).
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Old 10-03-2016, 10:17 AM
Wakerider16 Wakerider16 is offline
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Even if the pink stuff turns slushy I do not think it will be a problem, the real problem is that when it completely freezes and begins to expand. As long as the volume remains the same no problem should occur (theoretically).
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Old 10-03-2016, 10:19 AM
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Quote:
Originally Posted by Wakerider16 View Post
Even if the pink stuff turns slushy I do not think it will be a problem, the real problem is that when it completely freezes and begins to expand. As long as the volume remains the same no problem should occur (theoretically).
Agreed, the problem is, it has to be at full concentration to hold that -50 rating. Even a little bit of water left over in the motor dilutes that and significantly drops that -50 rating.

Winterizing dry works for me... Your results may vary.
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Old 10-03-2016, 10:25 AM
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Quote:
Originally Posted by mzimme View Post
Agreed, the problem is, it has to be at full concentration to hold that -50 rating. Even a little bit of water left over in the motor dilutes that and significantly drops that -50 rating.

Winterizing dry works for me... Your results may vary.
Air don't freeze. You could run the pink to dilute any supposed water pockets and then drain it?
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Old 10-03-2016, 11:33 AM
Gavin Gavin is offline
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I drain the water then add the pink just to be sure. Dry would be fine if you're 100% sure you didn't miss anything. I think the pink also helps with corrosion resistance. Didn't someone on here do a corrosion experiment awhile back? It was interesting but I don't remember the results.
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Old 10-03-2016, 12:16 PM
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So, how bout the Diesel oil question?
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Old 10-03-2016, 12:19 PM
bandit628 bandit628 is offline
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I have a 5.7 ltr, always run 15w40 Rotella. No issues for me.
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Old 10-03-2016, 12:20 PM
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15-40 Diesel is the correct oil.
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Old 10-03-2016, 01:01 PM
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Here's one: ( sort of rhetorical because I know the answer) but I'm running anti freeze through my boat, and saw pink come out of the exhaust. Am I covered?

Answer is, no. Unless the thermostat is open, or do you have dry blocked before the antifreeze, the antifreeze likely bypassed the engine, and went straight out the exhaust. Thermostats let water out of the engine, not into it
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Old 10-03-2016, 01:05 PM
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