Chaning Differental oil ???
Have an 03 F350, 90K miles, how often should the diff. oil be changed ? Ford lists the oil that came with is as synthetic. We do about 1/3 towing and the rest around town. Thanks
Forum Discussion
ilvtravln wrote:Grit dog wrote:
How often? Now. If it’s 20 year old oil. That said once I do an early diff change on a new or new to me vehicle, I go at least 50k between changes with good synthetic gear lube.
PS, if it’s an early 03 7.3 you have a very desirable vehicle if it’s been kept up and basically used only rarely.
Its a 7.3, well kept.
Worth mentioning in the event you’re unaware, depending on the model and options, you likely have a very valuable truck, especially being the newest/last 7.3s made.
Point is it’s worth it to take care of that truck, moreso than most. And they needa little extra care in the fluids department. 7.3 HPOPs are very happy with fresh oil and not happy with extended OCIs.
