I'll wander off the reservation here and dive into this oil's history rather than its performance. 'Cause that's how I roll after four Sierra Nevada pale ales. I spend a lot of time delving into Americana and vintage items, Route 66 visits and history, etc, and will immodestly claim I've gotten pretty good at tracking the dates and history of obscure stuff using obscure means....which apparently now includes Quaker State oil.
The oversized "Q" on the can's label showed up in 1954 or 1955 and was still used in 1968 (with a red circle on the '68 lid). So we know it's not from the early 50s. The can mentions "more than 50 years of continuous research," whereas a 1954 ad leaves out "more," so the oil is post-1954. Searching the Intertubes with numerous phrases from the can's buttocks confirms a late 1950s or 1960s timeline, but it all seems to come together in Quaker State ads from 1963 and 64, which also feature the same can graphics as the video. So this can would appear to be from that period, ballpark 1963/64 or early 1960s. FYI, in 1964 Quaker State sold for 42/33 cents, regular and sale pricing at grocery stores, although my German Shepherd would have shoplifted it for free if I asked him, one bite-marked can at a time. This was the API "SC" rating era, which I believe meant Sludge Crunchy.
WAY OFF-TOPIC: If visiting a vintage desert or mountain homestead, the type where there's only a crumbling foundation left, look at broken bottle bases to date the homestead, the 1/2/3 o'clock position for soda and beer, and the 3/4/5/6 o'clock position for liquor bottles, a one or two digit date code. With numerous trash samples you can sometimes say, "People lived here from 1943 to 1971" or whatever, that precise. And "They were TOTAL alkies" if lots o' liquor bottles.
Now back to your regularly scheduled dog and cat videos...
The oversized "Q" on the can's label showed up in 1954 or 1955 and was still used in 1968 (with a red circle on the '68 lid). So we know it's not from the early 50s. The can mentions "more than 50 years of continuous research," whereas a 1954 ad leaves out "more," so the oil is post-1954. Searching the Intertubes with numerous phrases from the can's buttocks confirms a late 1950s or 1960s timeline, but it all seems to come together in Quaker State ads from 1963 and 64, which also feature the same can graphics as the video. So this can would appear to be from that period, ballpark 1963/64 or early 1960s. FYI, in 1964 Quaker State sold for 42/33 cents, regular and sale pricing at grocery stores, although my German Shepherd would have shoplifted it for free if I asked him, one bite-marked can at a time. This was the API "SC" rating era, which I believe meant Sludge Crunchy.
WAY OFF-TOPIC: If visiting a vintage desert or mountain homestead, the type where there's only a crumbling foundation left, look at broken bottle bases to date the homestead, the 1/2/3 o'clock position for soda and beer, and the 3/4/5/6 o'clock position for liquor bottles, a one or two digit date code. With numerous trash samples you can sometimes say, "People lived here from 1943 to 1971" or whatever, that precise. And "They were TOTAL alkies" if lots o' liquor bottles.
Now back to your regularly scheduled dog and cat videos...