best oil
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Laughing Gas
Joined: Dec 2007
Posts: 850
Likes: 1
From: Bethel Park, Pa
best oil
its that time again and i once again i am unsure on what oil to use
i have ford motorcraft 50/50 synthetic/ conventional in now
should i go to full synthetic or is there a better alternative?
i already know im gettin a motorcraft filter
i have ford motorcraft 50/50 synthetic/ conventional in now
should i go to full synthetic or is there a better alternative?
i already know im gettin a motorcraft filter
Der Postmeister
Joined: Sep 2006
Posts: 6,859
Likes: 560
From: Long Beach, Calimexiforia
Ya already got your feet wet, might as well jump in & go Synth. Add a can of Seafoam Engine Treatment just prior to change to remove contaminant build up deposits. Synth. motor oil at 100% is Superior in every way except 1. The physical properties that allow it to perform so well in all other aspects is also the cause of it's 1 short coming, which is limited lubrication of upper engine components at initial start up. So add 1 Qrt. of Lucas Synth. Oil Stabilizer and that will more than make up for that.
Postmaster
Joined: Jun 2007
Posts: 2,621
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From: Sweetwater Texas
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Freshman User
Joined: Jul 2008
Posts: 42
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From: Castle Rock
I use a motorcraft filter and valvoline 10w-30 premium conventional oil on a 185,000 mile351w. But my truck hates valvoline high milage or anything other semi-sythetic or full synthetic. Anyone run into severe leaks or power loss with synthetic?
Senior User
Joined: Sep 2007
Posts: 336
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From: Iowa
My truck...Valvoline 10W-30 conventional and FL-1A filter...works great. My Mustang...Mobil 1 10W-30 full synthetic and FL-1A..works great too. Mustang has been on synthetic for the 17 years I have owned it and has 107K on it, did head swap about a year ago and stuff inside was like new...beautiful..wouldn't change a thing. Also wouldn't run my truck on it. Has 140K on it, been conventional always and don't need to create leaks that don't exist now (a damp gasket will be a leaky gasket when introduced to synthetic). Have seen it repeatedly along the way in other people's stuff. Also, there is no way I would ever use Seafoam in an engine ever for any reason..fuel maybe but not in oil period but is just my .02 worth. Same deal...based on previous observations.
