The second main staple of the Vokes business was the production of Vokes Oil filters or Lube Oil filters as some people refer to them. Vokes filter elements are the result of years of continuous testing and continuous improvement over decades when Vokes was a powerhouse in the filtration business. It is a testament to the quality of the product produced that many of the oil filter units they built are still in use today in power generation, Marine pumping and many other applications. Vokes oil filters were designed to capture even the smallest particles of dirt, rust, and other impurities, which can cause significant damage to an engine's internal components. Vokes also built their own transformer oil filtration system for use in the specialised area of treating transformer oil. This was a very successful line for Vokes and built on their extensive experience in the area of filtering oils in general.

Models found in the Vokes Oil filter Range include:

The Top Servicing Lube Oil filter models E426L; ED3; ED4; FTD31, TS318L which all utilised the Vokes disposable filter element/cartridges. Again, these came with a variety of connection sizes and flow rates.

Like the Vokes Fuel Oil compact range, Vokes also produced a range of compact lube oil filters. Models included E224L, E228L, E238L E246L.