Want to know more about how your engine is breaking-in or wearing? Curious about whether or not your oil is doing its job? Want to be ahead of problems that may develop? PartsVu has partnered with Blackstone Laboratories and we are now offering professional oil analysis kits. Results are typically received in a few days via email. Shop now. Mercury Synthetic Blend 4 Stroke 10W 30 Marine Oil - Quart - 92-8M0142141 - 6-Pack This new to market Mercury synthetic blend 4-stroke marine engine oil outperforms automotive oil in marine applications because of its specialized additive package designed for marine engines. Mercury 10W 30 Synthetic Blend engine oil offers: Industry leading shear and corrosion protection for Mercury outboards Advanced corrosion inhibitors that outperform FC-W standards 33% greater camshaft wear protection compared to other marine oils Protection in harsh marine environments, as well as during intermittent use and off-season storage This oil is for use in all engines