Put some quaker state in my truck.
- Thread starter Chris142
- Start date
CC/CD is old school IDI diesel spec-of course, Ford also recommended 2000 mile oil changes with it (that’s what the info on my ‘89 F-SuperDuty/450 says!
My 87 says 2500 miles
If Kmart was still open ......... they would have that in stock .
"Turbo Approved" 
I've always been a QS fan. That's right dump it into that ol IDI.
Perhaps the discrepencies between the 89 F450 & 87 F250 ODI was the Duty cycle on each truck was different. The GVWR of the 450 more than 250 so the oil ought to be changed 500 miles before. This is just speculation on my part. Very interesting none the less.
I've always been a QS fan. That's right dump it into that ol IDI.
Perhaps the discrepencies between the 89 F450 & 87 F250 ODI was the Duty cycle on each truck was different. The GVWR of the 450 more than 250 so the oil ought to be changed 500 miles before. This is just speculation on my part. Very interesting none the less.
AutoMechanic
Site Donor 2024
I would of put that oil in my collection not my engine lol. I’m sure it’s fine but I collect old stuff and I know SG oil is old haha. Love that bottle. Definitely before my time haha.
I remember buying oil in those bottles.
Vintage! I'd have used it too, though maybe not for a long internal.
It's due for a change in 900 miles
My bad for skiming your post. I thought you did a change with it.
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Yes, I WOULD HAVE too.
CleanSump
Site Donor 2022
It's designed for Pennsylvania weather. It'll sludge your engine and make your cat clog in Florida. 
My F-450 weighs about 10,000 pounds more than Chris’ does! Loaded, of course…"Turbo Approved"
I've always been a QS fan. That's right dump it into that ol IDI.
Perhaps the discrepencies between the 89 F450 & 87 F250 ODI was the Duty cycle on each truck was different. The GVWR of the 450 more than 250 so the oil ought to be changed 500 miles before. This is just speculation on my part. Very interesting none the less.
That is very high weights. I know the f450 weights more empty but how does one get that much extra weight loaded? like a boom equipment truck or something? My won ton is 13,000 lbs loaded with my slide in truck camper as an example.
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