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2012-2013 Boss 302 Mustang
motorcraft 5W50 replaced by Mobil 1 by ford?
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<blockquote data-quote="DA BOSS 13" data-source="post: 13355893" data-attributes="member: 142450"><p>AMSOIL keeps coming up as tops in forums as it is good stuff. There are those in my 6.0 Powerstroke forums that swear it is the ONLY oil to use in the engine because of the way the 6.0's HEUI (Hydraulic Electronic Unit Injector) shears down motor oil. These injectors hydraulically push diesel fuel into the cylinder, and vary in pressure from 500 psi to 3200 psi, and up to 4000 RPM, this is literally tortuous to motor oil.</p><p></p><p>Many oils fare well, many do not. AMSOIL does exceptionally well in UOA testing, but I don't use it in the truck. My truck takes 4 GALLONS of oil. I would need bank financing with AMSOIL to fill it. In this case I use ROTELLA T-6 5W-40 synthetic which I can pick up in Walmart for $16-$20 a gallon, and it wears really well in testing with up to 7500 mile change intervals. I change the truck at 5K intervals.</p><p></p><p>My point is there are MANY good oil choices for the BOSS engine, use the oil that best suits your driving and use. I think for my use the AMSOIL 10W-40 is the best choice, I drive the car hard on mountain roads and change out at 5K intervals. The engine seems to love it.</p></blockquote><p></p>
[QUOTE="DA BOSS 13, post: 13355893, member: 142450"] AMSOIL keeps coming up as tops in forums as it is good stuff. There are those in my 6.0 Powerstroke forums that swear it is the ONLY oil to use in the engine because of the way the 6.0's HEUI (Hydraulic Electronic Unit Injector) shears down motor oil. These injectors hydraulically push diesel fuel into the cylinder, and vary in pressure from 500 psi to 3200 psi, and up to 4000 RPM, this is literally tortuous to motor oil. Many oils fare well, many do not. AMSOIL does exceptionally well in UOA testing, but I don't use it in the truck. My truck takes 4 GALLONS of oil. I would need bank financing with AMSOIL to fill it. In this case I use ROTELLA T-6 5W-40 synthetic which I can pick up in Walmart for $16-$20 a gallon, and it wears really well in testing with up to 7500 mile change intervals. I change the truck at 5K intervals. My point is there are MANY good oil choices for the BOSS engine, use the oil that best suits your driving and use. I think for my use the AMSOIL 10W-40 is the best choice, I drive the car hard on mountain roads and change out at 5K intervals. The engine seems to love it. [/QUOTE]
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2012-2013 Boss 302 Mustang
motorcraft 5W50 replaced by Mobil 1 by ford?
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