c0m47053

@c0m47053@feddit.uk

• ⁨Comment⁩ on ⁨Back in the 1970s when we switched to unleaded gas, what did the vehicles that ran on leaded gas do?⁩ ⁨⁨6⁩ ⁨months⁩ ago⁩:

  You could also convert cars by putting harder valve seats in, not sure if this happened a lot at the time, or whether it’s more for classic cars that are worth enough to make sense to do. I don’t think the lead was primarily an anti knock additive, more of a valve and bore lubricant