Many of you may know that the early Boxs and 911s came with Mobil 1 15-W50 (redcap) and that was known as "factory fill." Later Mobil developed their 0W-40 (black cap) and that became factory fill.
I know that many have complained about oil consumption in the Boxster engines. My service tech says that 1 qt per 1000 miles is "normal,.
Here is something interesting. I have used redcap in my wife's car for some time. NO oil consumption between changes. Recently, I switched to blackcap and lo and behold, I am using about 1 qt per 1000 miles in her car.
Hmmm, what do you make of this??????????
Of course, here in SOCAL, I can use either due to our climate. This may not be germane for many of you.
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