Originally Posted by billwa
Like I said, my engine
has 2 CAV type filter, no RACOR
What is the difference? What is the purpose of having the two.
...Just kidding!.............sort of.
But for US bought fuel it really is over kill...IMO
OK...some basics.... some filters are designed for suction some for pressure....even the pressure ones can
work in suction...I have a CAV with a standard pressure spin on canister fuel oil/ water separator mounted on the suction side of my Ski Boat...it works great...but the lift is only 1 foot.
The Turbine series Racor
filters come equipped with vacuum gages and that's how you monitor
when a filter change is needed....suction is a lot weaker then pressure but it filters larger contaminates better as its not trying to force them through the filter under pressure but allows a gentler settling and less disturbance of those contaminants to the bottom of the filter bowl...the suction gauge is the only accurate way of really monitoring a filters performance.
You will find lots of threads on various forms talking about the importance of clean fuel and different systems developed to make sure of that...If you have ever had a bad experience with contaminated fuel you will be more concerned about it then those that have not....I fall in to the latter category.....That may change over time and certainly has more chances when taking on fuel in third world countries...I have burned literly 10's of thousands of gallons of diesel
with no issues whatsoever...but
precious little of that in boats..
Im still learning
everyday so take what I have to say any way you want...and Im not above being corected or re-learning something I have had wrong all my life either..