This was their reply to my questions.
Thank you for your enquiry. The size unit you would be looking for is a KU16 and the cost for them is $350. Replacement cartridges are $55 each, but would only need to be changed out once or twice per year (depending on the hours ran).
There are a lot of variables involved, but as a quick guideline, if you currently changed your oil at 10,000 KMs, then you would only need to change our cartridge every 20,000 Kms. If you were looking to extend oil changes (based on oil analysis), then you might find that you could get out to 40,000 Kms oil drains and only need to change out our cartridge at the 20,000 Kms mark.
If you’d like more information or to talk about this further, my details can be found below.
I look forward to hearing back from you soon.
Best regards,