I found a larger, clearer photo (at Amazon). The tagline is 5 Plus Quarts. In the net contents area, it is marked 5.1 QT 4.826 Liters. Many brands besides Pennzoil are selling the size, some are also marked 1.275 gallons (some specify that it is a U.S. quart or gallon). I found no good reason for it. Another forum claimed Walmart had an exclusive with oil companies for a five quart size, and the 5.1 qt was a way of competing. I don't know if this is true, but I did find a Walmart photo and ad for a 5 qt size, so perhaps this story hangs together. I found some off brands still selling 4qt, 1 gallon sizes, but the majors appear to have gone to this size. I found no evidence of it being a common engine oil capacity; engines seems to be all over the place for all capacity. Note: Technically, the 4.826 L is non-compliant. FPLA and UPLR (UPLR applies to motor oil) only allow three significant digits to the metric claim. Should be 4.82 L or a little more fill and 4.83 L. However, using 4 digits is a relatively common error with many example products. Oddly, the Customary claim allows up to three decimal digits.
--- On Mon, 12/3/12, Hillger,Donald <don.hill...@colostate.edu> wrote: From: Hillger,Donald <don.hill...@colostate.edu> Subject: [USMA:52038] Re: Pennzoil 5.1 quarts To: "U.S. Metric Association" <usma@colostate.edu> Date: Monday, December 3, 2012, 9:59 PM Actually, on the Pennzoil container it acknowledges the extra bit over 5 quarts in some way in words, but I don’t recall exactly what it says. From: owner-u...@colostate.edu [mailto:owner-u...@colostate.edu] On Behalf Of Paul Trusten Sent: Monday, 03 December 2012 19:50 To: U.S. Metric Association Cc: U.S. Metric Association Subject: [USMA:52037] Re: Pennzoil 5.1 quarts Does it possibly say "to deliver 5 quarts" on the container? Paul Trusten, Reg. Pharmacist Vice President U.S. Metric Association, Inc. Midland, Texas USA www.metric.org +1(432)528-7724 trus...@grandecom.net On Dec 3, 2012, at 20:20, "Hillger,Donald" <don.hill...@colostate.edu> wrote: Here’s a mystery for the list: I found the attached image in the K-Mart weekly ad, and went to the store to find that most oil brands are sold now in 5.1 quart size. Why? 5.1 quarts = 4.8 L = 1.28 gallons, so nothing is rounded. Don <Pennzoil_5.1-quart.jpg>
