Originally Posted by GMBoy
Motor oil sound is the equivalent of the butt dyno - no facts support either.
Well that's true but Shannow and I would disagree. On 2 of my vehicles (Ford's) they were noisier on M1 (5w-30) than SuperTech syn (5w-30). Apparently most of my vehicles in the past were so noisy I didn't notice if oil made a difference!
Motor oil sound is the equivalent of the butt dyno - no facts support either.
Well that's true but Shannow and I would disagree. On 2 of my vehicles (Ford's) they were noisier on M1 (5w-30) than SuperTech syn (5w-30). Apparently most of my vehicles in the past were so noisy I didn't notice if oil made a difference!