I was wondering how a mixture of Mobil-1 and MaxLife Synthetic, or regular, would do? I purchased a 97 Stratus 2.5L 24V V6 (mitsubishi made). The engine is great, but I like to use the MaxLife to repair any seals that just may go bad and also clean out the engine...but the added protection of M1 PAO is something very important, too! I currently used 3qts MaxLife Regular 5W-30 with 2qts Mobil-1 10W-30. Think that is a good mixture, or a simple waste? I like the idea of the MaxLife Synthetic, too. So even better....next time 3qts MaxLife Synthetic 5W-30 with 2qts Mobil-1 5W-30? The engine sems to be operating fine right now, but is this a good idea, or should these oils even be mixed? Thanks for the advice!!