Curious to y'all's opinions on this. Let's say I run a 5k oci and I wanted to run a Mobil syn. In the case of 5k, does the M1EP "protect" better? The reason I ask is that they are the same price on amazon and walmart. I know, it's a waste to drain these oils at 5k, but in terms of someone being in warranty, and they want to run a synthetic, what would be the benefits for M1 or M1EP for that drain interval. I am not asking for an oil recommendation, just want to compare these 2 for short oci's.