The 6.5 Detroit. How bad is it really.

[k1500 97]

I like the 6.5. They are no different than any other engine, they have their specific challenges that you have to learn. Glow plugs are not optional, they must all work and work well to start, especially below freezing. Broken cranks are a known issue but also with a known source; the harmonic balancers fail and take the cranks with them. It is known but still not common. They last forever when treated well, mine gets +30% highway fuel mileage (+20% city) vs my 400 gas truck (gas 4.10, diesel 3.73, admittedly) diesel is more expensive, fuel additive is mandatory, they're noisy and when you do need hard parts they're x4 more expensive. The message is if you got a good one, it's great. If you got one that needs love, you need time, knowledge, or money.

I dont have one. Just wanna gain knowledge b4 i get one if they are worth it. Thanks for the information.

 

[99xcss4]

if you do ever get a 6.5 only get a 2500 or 3500 they did offer it in half tons but they have egr here is a video on it

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[DDTurbo]

We love our 94 Suburban and it's 6.5T.
Never a hard starter and love the fuel mileage.