OIL ???
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Junior User
Joined: Jan 2009
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OIL ???
I have a 1995 F250 7.5l 460... I can not find it in the repair manual, or auto parts store...
Some told me 10w30 and some people said 5w20 synthetic???
Can anyone tell me what I need to use?
Some told me 10w30 and some people said 5w20 synthetic???
Can anyone tell me what I need to use?
Postmaster
Joined: Aug 2005
Posts: 4,728
Likes: 8
From: Cleveland, TN
If it is a high mileage engine it would probably be best to stick with dead dino, unless you are fond of leaks...
Senior User
Joined: Dec 2009
Posts: 118
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From: Murray KY
Thanks for the info because I was wondering the same about our 1989 429 that I have never changed but plan to do as soon as our new Fumoto oil drain valve arrives.
WM brand 10W-30 synthetic has worked good in the MH 454 but currently have 5W-40 Rotella syn in it. I was concerned about the Ford since I know they say thinner is better.
Since I would like to change it again in about 1000 miles using another round of Sea Foam in the crank case the last 50-100 miles before the drain I could use regular dino I guess but the gap between syn and dino seems to be closing price wise.
The 454 had 93K miles when we took it to synthetic and had not increase in leaks and at 100K still does 3K miles lowering the oil level by 1/2 a quart.
WM brand 10W-30 synthetic has worked good in the MH 454 but currently have 5W-40 Rotella syn in it. I was concerned about the Ford since I know they say thinner is better.
Since I would like to change it again in about 1000 miles using another round of Sea Foam in the crank case the last 50-100 miles before the drain I could use regular dino I guess but the gap between syn and dino seems to be closing price wise.
The 454 had 93K miles when we took it to synthetic and had not increase in leaks and at 100K still does 3K miles lowering the oil level by 1/2 a quart.
Posting Guru
Joined: Nov 2009
Posts: 2,244
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sea foam huh? i use zmax its 40 bucks but that and 10w30 valvoline full synthetic and it keeps it really clean and well lubricated
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Senior User
Joined: Sep 2006
Posts: 261
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From: Mason Michigan
Unless that vehicle has been ran on synthetic it's whole life or if it is right on the oil cap there is no need to run it and it is not recommended to run.Stick with good ole 10w30 and she'll be fine.
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Postmaster
Joined: Jan 2009
Posts: 4,558
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10-30 high mileage isn't any thicker it just lubricates old dry seals ...I used the synthetic in a older motor that made it leak more then switched to the castrol GTX & after a 2000 mi the leaks all but quit .....
Elder User
Joined: Oct 2005
Posts: 500
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From: Angleton Tx.
I use Mobil 1 Synthetic from Walmart, I got my truck with 176k when I stated using the SYN oil. It now has 180k and I really think the little oil leak it had has stopped. I just like the longevity from SYN and the fact that in my Harley Davidson, I ONLY use Royal Purple and REALLY does absorb more of the heat. If it works that good in an air cooled engine, I trust it in my Truck. BTW 10/30.
Posting Guru
Joined: Nov 2009
Posts: 2,244
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i agree 100% and even if it wasnt leaking the only reason running synthetic would cause it to start is because it cleaned the gummed up garbage oil u ran in it before
dont be lazy fix ur leaks and run good oil that will make it ur engine last longer