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Old 09-16-2014, 06:25 PM   #77
SHAUN
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Join Date: Nov 2010
Location: charleston sc
Posts: 54
Re: Important Information About Mobile 1 Synthetic Motor Oil For Mach 1's

My MACH has over 67K mi. and all I ever used was 5W-30 syn. mainly amsoil since 5k mi. The only sound under the hood is the howling from the filter when the engine is running. I'll stay with it until my MACH 1 say otherwise.
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