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Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ & LMM engine specific topics.

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  #11  
Old 08-14-2017, 11:15 AM
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gary_lucas gary_lucas is offline
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Quote:
Originally Posted by socaltoolguy View Post
Thanks to all of you who took the time to reply. So, from what I'm gathering, I don't really have much to worry about with an LLY motor. That's great. Now all I have to do is find a truck that I can afford. One more question, At what point should miles become a factor? I realize that maintenance plays a huge roll but I am seeing a lot of trucks for sale with 175k to 200k miles. When I sold our truck it only had 70k on it. I was told that it wasn't even broken in yet. So, at what point should I say, "too many miles"?


Ray
I don't think this is specific to an LLY, it's legitimate advice for any vehicle. But most vehicles aren't 5-8k to replace head gaskets on.

The only piece of advice I'd give is watch out for overheat / radiator clogged up on the air side.

I have an LLY and had an overheat problem:

https://goo.gl/photos/Yhq49tzEDFz8aMza9

That was the cause, but it's not that easy to check. At this stage I pull it out every 2nd year and take a look.

I did need my head gaskets done and I'm pretty sure this was the cause.
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  #12  
Old 08-14-2017, 11:24 AM
socaltoolguy socaltoolguy is offline
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Wow Gary. I looked at your pic of your radiator and I can see why you had an overheating problem. I've never seen a radiator that messed up. You must travel some crappy roads is all I can say. I had my 2001 and sold it in 2011. It had 75k on it and my radiator was clean. I will say though that I used to keep an eye on it. I figured if the front of the oil cooler and a/c condenser was clean, the radiator would also be clean. Thanks for your comment. I appreciate it.

Ray
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  #13  
Old 08-14-2017, 06:39 PM
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a5150nut a5150nut is offline
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Gary,

Those photos remind me of my old 74 350 3/4 ton running between San Jose and Paradise going through the Sacramento valley rice fields. The front of the truck would look like green fur when I got home. And for only coming home on the weekends the birds would swarm it as soon as I parked. I ran black nylon screen behind the grill and what didn't fall off the birds would remove for me.
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