Can I simply switch from oil pressure to gas pressure shock absorbers?
Oil shock absorbers are only used to a small extent in new vehicles. During longer car journeys, there is a loss of damping force (up to 35%!), which only disappears again after a break. A gas shock absorber does not have this problem because the nitrogen gas in the shock absorber prevents the oil from foaming.
So when a damper replacement is due, gas pressure is always the technically better choice, no matter how old the car is. If there is a way to optimize driving safety, especially in older vehicles, it should be used.