11. All the gears were helical, and enclosed in an oil bath , making for very silent transmission. 12. And I've been told that I don't need an oil bath at 4 a . m. 13. Oil bath filters have fallen out of favor.14. :: I'd go with a nitrogen ( or argon ) atmosphere, rather than an oil bath . 15. The vessel is then screwed tight and heated to above 102 �C in an oil bath . 16. If even higher temperatures are required, the oil bath can be replaced with a sand bath. 17. In later decades, the water bath would be replaced with an oil bath for better filtering performance. 18. Engine intake air passed through a metallic filter, while heavier particles were captured by an oil bath . 19. Both leadscrews ran in sealed oil baths . 20. Unfortunately, there were design errors in the casing used for the oil bath , which led to leaks.
