Eddie, what spec would you recommend for the 3.7 Roadsters, as there's scant info from MMC and the oil filler cap just says 5w-30 semi synth, which I feel is wrong
I would also be interested in the answer. In my estimation, it is as follows.
You have an American engine. The Americans don't know anything about oil. They pour what's on the shelf right now. The people at Ford have no idea what they are doing. Conclusion is, your 3.7 runs with everything at hand...smoothly.
