Here’s my thinking:
I have a nice collection of wristwatches: Audemars-Piguet, Blancpain, Patek, Lange and Rolex. All are either mechanical or automatic movements except the Oysterquartz. Although they all keep great time, none, including the Oysterquartz, are as accurate as my cell phone. It’s what I always use for the most accurate time.
I like Pagodas because they’re old school. I like their mechanical fuel injectors, funky wipers, foot switch for high beams, crank windows and seat adjustments, etc etc. For me, whether the clock is accurate or not is irrelevant. I just love the fact that it ticks and it’s original to the car.
We own these cars because we enjoy them. If having consistently accurate time in your car is important to you, switch over to quartz but if you enjoy the peculiarities of a 50+ yo car, stick with analogue and realize it’s never going to be perfect.