|
You should be in good shape with the Allison and 7.3. It's alot better than the newer Power Stroke engine. I have almost 400,000 on a 91 model 7.3 in a F350. All that's been done to it was I had the heads rebuilt last year. It had 3 worn out and burned exhaust valves but was still running good and had power. It missed a little when cold but after it warmed up it ran smooth. My son has around 250,000 miles on his and never has put a wrench on it. We both use Mobil Delvac engine oil and Mobil filters changed at 4500 mile and Lucas fuel conditioner every other fill up. The farm did'nt get that many miles on the same identical pickups on the same jobs and the only difference was they use Shell Rotella oil. Dr Evil is right about the turbo. If you put a turbo on it be sure to put new headbolts in. The 7.3 is bad about breaking the old style head bolts when a turbo is added.
| 
