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Is 300,000 miles realistic for 6.4L?

wjcook68

wjcook68

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I cannot find any whitepapers regarding durability testing on the 6.4L truck engine. My question is whether or not 300,000 miles without major repairs is realistic for this motor and transmission combo provided ALL maintenance is done on time. If anyone has links to info, that would be great. I really like this truck. I have never owned a RAM before and I have had zero regrets after buying this truck. I use it as a truck but don't abuse it if that makes sense.
 
I don't see why it wouldn't. The motor is built for durability.. the transmission might be questionable around 300k.

The rest of the truck? Probably going to be garbage.. especially if you live somewhere with winter / salt.
 
Greenhills said:
I don't see why it wouldn't. The motor is built for durability.. the transmission might be questionable around 300k.

The rest of the truck? Probably going to be garbage.. especially if you live somewhere with winter / salt.
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That trans will be the last thing standing the ZF 8speed is a almost bullet proof trans
 
I wouldn’t trust is to last 300k. I have nothing to back that up either, just my opinion.
Maybe all interstate at 35-40k miles a year.


Sent from my iPhone using Tapatalk
 
I am in the PNW so no salt on the roads. I drive 18-20k per year 80% highway.
 
80% highway shouldn't be a problem - just stay on top of maintenance.
 
I don’t see why not if PM is done on time.
Part of the reason I bought this truck is because even though it was a “first year” (2019), the major components are at mature levels of development and are built to work hard.
 
Cummins610 said:
Unless they made changes to the cam/lifters from the early 6.4 trucks I can almost guarantee it will never make 300,000 without wiping out a cam. We ran a fleet of 6.4s and 5.7s in the 2012-2016 range, 300k just isn’t going to happen.
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I met a guy who runs 6.4's in his construction crew, he runs every one of them to over 400,000 miles before replacing with new ones. He does all construction for Chick Fil A, and he loves the Hemi
 
Firebird said:
I met a guy who runs 6.4's in his construction crew, he runs every one of them to over 400,000 miles before replacing with new ones. He does all construction for Chick Fil A, and he loves the Hemi
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When you say you met a guy.. not trying to be a skeptic but is this a ''met a guy at the pumps'' or a ''met a guy at the in-laws'' kind of situation?
 
Met him at a restaurant, and we stood around and talked trucks. His was loaded heavy, and I just walked up to him and started asking about how he liked the 6.4
 
I think it all depends on maintenance and how it's driven.. seems some people always have problems and others drive there vehicles a long time .. no matter the brand..

I use to plow snow for a co ,all chevy trucks some trucks would need a transmission every year and others would make it 3 years ÷.. all depended on who was driving the truck..
 
Cummins610 said:
Unless they made changes to the cam/lifters from the early 6.4 trucks I can almost guarantee it will never make 300,000 without wiping out a cam. We ran a fleet of 6.4s and 5.7s in the 2012-2016 range, 300k just isn’t going to happen.
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We all know how fleet works…. Lots of idling and lots of guys who drive it like its stolen
 
It's not necessarily the miles, it's the amount of heat cycles an engine goes through in those miles.
 
Thanks for the replies. I was just curious because at today's prices I will have this truck for a very long time.
 
wjcook68 said:
Thanks for the replies. I was just curious because at today's prices I will have this truck for a very long time.
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I am sure it is better built than the 5.9, and I had two 5.9's go past the 300k mark and that was lots of towing and driving it pretty hard. I got about 175k out of the transmissions.
 
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