oil change??
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Joined: May 2008
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oil change??
i am new to the diesel world and i took my 7.3 to get the oil, oil filter, and fuel filter change. i asked the man how many miles before i have to change it again and he said 3000. i thought the diesel was like 5000 or so. what is the proper miles before a oil change. thanks.
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
change intervals depend on oil and personal preference
the dealer changed my oil twice when I bought my truck and I could only get about 2800 miles
I then changed to rotella 15/40 dino and could go 5000 mi
I then changed to Rotella 5/40 synthetic and could go to 10k mi
your milage may vary
the dealer changed my oil twice when I bought my truck and I could only get about 2800 miles
I then changed to rotella 15/40 dino and could go 5000 mi
I then changed to Rotella 5/40 synthetic and could go to 10k mi
your milage may vary
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
On a 7.3L PSD with a stock HPOP and stock injectors:
Rotella 15w-40 3,000-4000 Miles
Chevron Delo 400 4,000-7,000 miles
Rotella 5W-40 Synthetic 5,000-10,000
Schaeffer's 7000 15 W-40 5,000-8,000
Schaeffer's 9000 5W-40 5,000-10,000
I wouldn't recommend going over 5,000 on any oil without an oil analysis to determine historical results & trends for your setup.
Rotella 15w-40 3,000-4000 Miles
Chevron Delo 400 4,000-7,000 miles
Rotella 5W-40 Synthetic 5,000-10,000
Schaeffer's 7000 15 W-40 5,000-8,000
Schaeffer's 9000 5W-40 5,000-10,000
I wouldn't recommend going over 5,000 on any oil without an oil analysis to determine historical results & trends for your setup.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
On a 7.3L PSD with a stock HPOP and stock injectors:
Rotella 15w-40 3,000-4000 Miles
Chevron Delo 400 4,000-7,000 miles
Rotella 5W-40 Synthetic 5,000-10,000
Schaeffer's 7000 15 W-40 5,000-8,000
Schaeffer's 9000 5W-40 5,000-10,000
I wouldn't recommend going over 5,000 on any oil without an oil analysis to determine historical results & trends for your setup.
Rotella 15w-40 3,000-4000 Miles
Chevron Delo 400 4,000-7,000 miles
Rotella 5W-40 Synthetic 5,000-10,000
Schaeffer's 7000 15 W-40 5,000-8,000
Schaeffer's 9000 5W-40 5,000-10,000
I wouldn't recommend going over 5,000 on any oil without an oil analysis to determine historical results & trends for your setup.
P.S. Where did your name go in your sig?
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
Chris, just an estimate on the mileage over all the oil analysis reports I've seen. Rotella ussually will break down to a 30 weight before 5,000 miles. Delo can easily go 5-7K. The UOA's are about 1/2 CJ-4 and 1/2 CI4+ samples. Pretty wide range on some of the numbers, it all depends on the application/use of the truck.
All those numbers go out the door with a dual HPOP system - they really shear the oil down quicker.
oops, on the name in my sig. I changed my sig to honor those for Memorial Day, forgot to put my name back on.
All those numbers go out the door with a dual HPOP system - they really shear the oil down quicker.
oops, on the name in my sig. I changed my sig to honor those for Memorial Day, forgot to put my name back on.
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
I average 7,000-8,000 miles on Schaeffer's 7000 CJ-4 oil. UOA's have shown the same results as the 7000 CI4+ for my application.
The school busses in my district or going over 10K on the CJ-4 with UOA's also. Not all CJ-4 oils are equal.
The school busses in my district or going over 10K on the CJ-4 with UOA's also. Not all CJ-4 oils are equal.
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Thanks Rich. Just using my eyeballs, the Delo has always looked thinner draining out of the pan than the Rotella does at 5K. Guess I can't trust the old eyeballs anymore.
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