mobile synthenic
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Senior User
Joined: Dec 2005
Posts: 145
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From: minneapolis
mobile synthenic
i have to get an oil change. what weight do you guys recommend. i had mobile put in last time.. forgot what weight it was.. i see some guys vary from 5w-10-20-30. 99 4x4 with 67k on rebuilt 87k total.. tx
Hotshot
Joined: Jul 2005
Posts: 11,932
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5w30 or 5w20 is fine. For Minnesota with the cold temps, the thinner the better. There is not that much difference in the two. I personally use 5W30 Mobil dyno oil. Truck will run forever. I change at 5000 mile intervals. The problem arrises with guys thata want to use 15w40 or 20w50. Thats too thick.
Cargo Master
Joined: Dec 2006
Posts: 3,489
Likes: 45
From: Central NY
head to Walmart, pick up two 5 qt jugs of Motorcraft 5W-20 synthetic blend and a Motorcraft FL820-S oil filter. happy driving....5,000 mile oil change intervals (OCI) unless you are doing "severe duty" as defined by the owner's manual.
Posting Guru
Joined: Apr 2004
Posts: 1,127
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From: Lewistown, PA
5w30 or 5w20 is fine. For Minnesota with the cold temps, the thinner the better. There is not that much difference in the two. I personally use 5W30 Mobil dyno oil. Truck will run forever. I change at 5000 mile intervals. The problem arrises with guys thata want to use 15w40 or 20w50. Thats too thick.
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Mountain Pass
Joined: May 2009
Posts: 235
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From: Snow Camp, NC
I have always used mobile 1 synthenic in my 97 f150 with a lightning motor in it, and i have no complants.
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Senior User
Joined: Nov 2008
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Our vehicles at work thats all we run is 10W30 Mobil synthetic. They qualify for extreme duty.
One of our 2002 vehicles blew an engine at 85,000. The driver was not paying attention and hit an blown tire in the road. It took out the oil pan.
When they took the engine out and performed an autopsy on it, the mechanic said the engine showed very little wear and said he was now a believer in synthetic oil. He said it showed half the wear he had seen in his 25 years as a mechanic and convential oil engine.
I am not a mechanic but have been around a little enough to know that engine was very clean on the inside and had almost no oil deposits in it. We change the oil at 5,000 miles and have been running synthetics since 2002.
Seeing is believing so I have switched to synthetic in all my vehicles.
One of our 2002 vehicles blew an engine at 85,000. The driver was not paying attention and hit an blown tire in the road. It took out the oil pan.
When they took the engine out and performed an autopsy on it, the mechanic said the engine showed very little wear and said he was now a believer in synthetic oil. He said it showed half the wear he had seen in his 25 years as a mechanic and convential oil engine.
I am not a mechanic but have been around a little enough to know that engine was very clean on the inside and had almost no oil deposits in it. We change the oil at 5,000 miles and have been running synthetics since 2002.
Seeing is believing so I have switched to synthetic in all my vehicles.
Freshman User
Joined: Apr 2009
Posts: 37
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I run 5W20 Motorcraft Semi-Synthetic from Walmart in my F150 and Lincoln LS. nothing but. and can't beat the price. I ran Lucas Full Synthetic 10w30 in the Lincoln once but had a hard time justifying the $7.99 a qt. for a car that takes 6.5qts!
Elder User
Joined: Mar 2007
Posts: 695
Likes: 4
Mobil 1 is under a lot of criticism right now because they are just squeaking by the wear test. I used it for 65K miles and have since switched to motorcraft semi synthetic. Cheaper and that is what ford recommends. 5w30 or 5w20 will work. I use 5w30 because that is what the truck has had since I have had it.
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