OIL weight HELP
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OIL weight HELP
I have an 01 f250 V10. I bought the truck used and this was my first oil change. I looked at the sticker and it said 5-40 but the cap says 5-20. Wall Mart messed up and put 10-40 in it. I called Wal-Mart and they agreed to redo the change, but I am wondering what weight to go with. 5-40 that was in it when I bought it or 5-20 like is reccomended. I live in Louisiana and it rarely gets below 30 degrees.
I know someone can help me.
I know someone can help me.
Senior User
Joined: Jun 2007
Posts: 283
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From: Minnesota
Double check owners manual for your temperature (outside ranges).
The proper viscosity of oils (not weight as all weigh app. 3lb/qt.) will be on that chart.
Use the(( 5w (winter/pourpoint) 20 breakdown )) as it is best for our tight tolerance engines.
Old school thinking of using diesel oil 15w40 or the like will ruin our v10's.
Good-luck with your truck and welcome to FTE.
Rich.
The proper viscosity of oils (not weight as all weigh app. 3lb/qt.) will be on that chart.
Use the(( 5w (winter/pourpoint) 20 breakdown )) as it is best for our tight tolerance engines.
Old school thinking of using diesel oil 15w40 or the like will ruin our v10's.
Good-luck with your truck and welcome to FTE.
Rich.
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Fleet Mechanic
Joined: Aug 2003
Posts: 1,546
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From: Kemmerer, Wyoming
5W-20 is what is recommended, if you want 5W-30 you should still be OK. NO 10W- 15W- or 20W weight oils should ever go in these!
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Joined: Jul 2002
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From: Long Island USA
Originally Posted by bookum1
Wal-Mat is going to put Pen 5-20 Syn blend, but I think I am going to ask for 5-30 because some have mentioned it for chain noise
Cargo Master
Joined: Apr 2003
Posts: 2,059
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From: Too close to Houston
Originally Posted by 44magnum
I have heard that we should change to thicker oil if the truck is close to 100,000 mile mark due to the tolerances getting larger.Is there any truth to this?
I only run 15W40 in my '83 302 because of the flat tappet cam. I wouldn't change oil weight for high mileage. If the clearances are opening up due to wear changing oil viscosity isn't going to fix anything. It will only temporarily mask the problem and you'll wind up grinding journals undersize when you may have only needed bearing inserts.
Last edited by Sport45; Oct 26, 2007 at 10:30 PM.
Fleet Mechanic
Joined: Aug 2003
Posts: 1,546
Likes: 46
From: Kemmerer, Wyoming
Originally Posted by Sport45
I wouldn't change oil weight for high mileage.
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