Cummins 5 year old synthetic oil with 1000 miles - change ?

Actually I feel like it is ok but who really knows , 5 yrs is a long time .

I used to think cancer was a death sentence and 75 was to old to care
but I don't feel like that anymore now 75 is quite young and he may have a
lot of traveling yet to do .

Not telling you to do this but I would give my friend a 100 bucks and
say maybe this will help .

Like SOBOVA asked how about the tires ? Those may be the real concern .

Ray