oil burn
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Junior User
Joined: Dec 2007
Posts: 85
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oil burn
i have 97 F-250HD with 351 and it is burning oil someone told me to put heavier oil in it so i got 10w 40 would this work or is it something else. also i has 223,000 on it im getting 12-13mpg with this many miles on it is there anything can do to it to get few more mpg or anything.
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Well...if you are burning oil...one or more could be the issue...
1. Bad valve seals
2. Worn valve guides
3. Pressurized crankcase (oil pan) due to a clogged PCV valve or breather system
4. Blow-by from worn piston rings
IMO...with that many miles on the engine...sounds like it is time for a reman long block. That should get your mpg's back in the 15-17 empty highway miles.
Hope this helps...
biz
1. Bad valve seals
2. Worn valve guides
3. Pressurized crankcase (oil pan) due to a clogged PCV valve or breather system
4. Blow-by from worn piston rings
IMO...with that many miles on the engine...sounds like it is time for a reman long block. That should get your mpg's back in the 15-17 empty highway miles.
Hope this helps...
biz
