Hi guys would much appreciate feedback on this situation. I had my engine rebuilt a 13B Turbo, and fuel filter blocked after using Castrol R30 200:1 pre-mix with fuel (200ml to a 50ltr tank approx). The Filter the workshop installed was a 40 micro XRP space saver filter which to me looked far too small, and restrictive. So I opted for a Speedflow filter which is larger of the same micron but flows way better. So question is should had the XRP filter blocked with only 200:1 mix of castrol R30. And was the XRP space saver filter the right option for a Rotary turbo.

cheers.