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I've tried a number of different gear oils in my attempt to 'cure' the rough 1=>2 cold shift. Redline MT-90/MTL blend and Royal Purple Max Gear offered very modest improvements, but not to the level I'd like. Shifting is still rough, especially when the car is cold. Has anyone tried the SF oil...

What do you make of this? The 350Z is my daily driver and I want it to last a good long time. My goal is to find the right oil/filter combo to maximize longevity. Can I do better? The oil filter for this sample was a Purolator Power Flow (cheap paper). Typically, I use M1 or Pure1 filters. I've...

I've been using Mobil 1 filters and Mobil 1 5w-30 oil in my 350Z for quite some time (about 40K miles.) Every morning at startup, I noticed a brief grating sound that lasted about 1 second, but I figured that was just the nature of the beast, so to speak. Just recently, I took my car in for an...