According to this Texaco ad from seventy years ago, using the right lubricant for your car is almost as good as ham radio.

The ad proclaims that it’s a grand feeling to log a new ham station, and it’s also a grand feeling when your car is cushioned with Marfak chassis lubrication from Texoco, which gives a car that “cushiony” feeling for at least a thousand miles.

With ordinary greese, according to the ad, you’re taking the road shocks after a few hundred miles. But Marfak from Texaco stayed on the job hundreds of miles longer for more velvet smooth riding, as depicted by the car supported by balloons.

The ad appeared in the September 1946 issue of Popular Mechanics.

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