Assuming you are talking about hydraulic valve lifters, they automatically get filled with engine oil. No recharging needed. If you are talking about something else, please let us know specifically what. Your car's make/model/year/engine may help, too.
Answers & Comments
Assuming you are talking about hydraulic valve lifters, they automatically get filled with engine oil. No recharging needed. If you are talking about something else, please let us know specifically what. Your car's make/model/year/engine may help, too.