Quote:
Originally Posted by Jordo!
That's an interesting idea -- I hadn't thought of that as an indicator of a completed break-in, but it makes sense.
I consumed pretty much exactly 1/2 a qt of oil during the first 3.75 K, assuming I don't see any oil consumption over the next 3.75, I should go to synthetic on my second oil change -- otherwise wait longer?
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Yep, you were fine to go synthetic after that first 3750. I saw 1/3 quart consumption (maybe) over the first 2000 miles on our Z; we switched to the Castrol 0W-30 at 2100. I'll report back with a UOA and oil consumption report at roughly 6000 miles.
I do have to note, however, that the 0W-30 (which is indeed a thick oil) still gets us 30+ mpg on the highway. 33-34 mpg just cruising at 65 mph (speed limit here). Pretty impressive for such an engine.
