it's been 2 years since I first came across the cool advertising art on the Kleen / Whiz products, and here's a couple new to me

https://check_the_oil_promotions_llc.liveauctioneers.com/catalog/339801_september-gas-oil-and-advertising-auction-2/?page=3 for the auction company listing for these

https://justacarguy.blogspot.com/2022/03/whoever-had-cool-idea-for-artwork-on.html  for the ones I posted in 2022