Replaced my IMS bearing this week

[cnavarro]

We actually have a vibration tester on loan to the local Porsche dealership to try to see if a bad bearing is something that can be quantified. So far, the results aren't too useful. Too much noise from that area. There is a value in the in-car diagnostics for engine vibration, but I'm sure it's too general for point of measuring IMS bearing life. We did however notice that when switching from Mobil 1 0w40 to Motul 5w40, overall engine vibration dropped 5%.

[clickman]

Originally Posted by cnavarro

We did however notice that when switching from Mobil 1 0w40 to Motul 5w40, overall engine vibration dropped 5%.

At the risk of hijacking the thread , how much of that vibration reduction is the Motul and how much is the 5w40? I.e. could we expect to see that with any good 5w40, like maybe Castrol Syntec?

[cnavarro]

I haven't compared this, but I'd guess it was mostly just viscosity based.