B
biglou
I've been looking for the thread that brought this up, but I can't find it. It seems like I remember reading that the latest formula of the Mobil 1 15W-50 (red cap) with the "SuperSyn" blend was still OK to use in the big four strokes. I am well past the break-in now on the 426. Been using Yamalube 4 since day one. Prolly got 10 tanks of gas through it and about 4-5 oil changes and am looking to make the jump to full synth. Give me your thoughts, long or short. I'm all ears. Even a simple "yeah" or "nay" will suffice if any of you want to take the time to add your $.02. Thanks.