c0m47053
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- Comment on Back in the 1970s when we switched to unleaded gas, what did the vehicles that ran on leaded gas do? 5 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