31. The oil filter would also be changed. 32. Whenever you remove an oil filter , be sure to check that the old O-ring is in place. 33. In conventional configurations, customers have to crawl under the truck to access the oil filter before unscrewing it. 34. Because particles accumulate in the oil, it is typically circulated through an oil filter to remove harmful particles. 35. An electronic ignition system was introduced, and the engine also received hydraulic lifters and a spin-on oil filter . 36. The designers had aimed at increasing servicing intervals so the engine incorporated both conventional and centrifugal oil filters . 37. AlliedSignal is the company behind auto products such as Fram oil filters , Prestone anti-freeze and Autolite spark plugs. 38. Many workers at the plant, which makes spark plugs, oil filters and fuel tank parts, are somewhat jaded. 39. Meat processors use a device called a comitrol, a cylinder that looks a little like an oil filter . 40. Even after passing through the oil pickup screen and the oil filter , debris can remain in the oil.
