Automotive Gears Lubricated from Crankcase

Distributor  or timer  gears  are  most  often  located  in the  crankcase and therefore, are  lubricated  by the engine oil. Where  this  is not  true, an SAE  20  or 30  oil  will  service such  gearing. Camshaft gears are likewise lubricated by the engine oil. In case gear type oil pumps are used, the fluid being handling, of course, acts as the lubricant.