Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Friction Modifier - Ford 9"
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Old 02-14-2003, 04:19 AM
motionsigns motionsigns is offline
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Same reputable source (very well known rear end company) that gave the initial recommendation about FMS friction modifier says that I should never use synthetic gear lube because it will absolutely work it's way past the seals. What's your experience.
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