GQ Diesel fuel filter

Go with CAV filters, $9 per filter, $100 for the unit..

Takes no time to get your money back.

Martyn,

How often do you replace the main filter if changing the auxillary every 10?

Did'nt know about the audible buzzer, i assume this comes on with the light in dash. To check buzzer i remove filter and leave water trap attched and fill with some water and turn iginition key on? Buzzer should be blaring?

Would i be best running with twin auxillary filters as i have two factory tanks, one each? or would one be satifactory in mainline? do you use trucksters CAV filters?

Cheers

Crowe,
I changed the main filter when I put the new engine in about 15,000 k's ago, I cut the old filter up which had been in for about 30 months and there was very little crud inside, the auxillary I change on what I'm doing rather than mileage, if I'm running around town I change the filter every 8 to 10 thousand, if I'm out in Start Trek country I replace the filter as soon as I come back, or if it's an extended trip I take a couple of spare elements in separate sealed cardboard boxes, sealed with selotape or something like that so the individual filters remain dust free and don't get contaminated when I open one of them. I check my oil and water daily so checking the filter glass bowl only takes a second. Be wary about getting to fine a filter this can load your fuel pump, like trying to suck a golf ball through 30 meters of garden hose, The one I have is 5 micron and as pointed out the Nissan one is 10 micron, a one micron filter may be a bit of overkill and may be more trouble than it's worth, I may be wrong this is IMHO ( I've been wanting to use that acronym, H is for humble) I only have one tank but I wouldn't think you would have to fit two filters, just the one in the main line to the pump should be sufficient. The one I have is Lucas but I'm sure the CAV filter would be very similar, the price is.

have been changing every 10,000kms and have had hardly any garbage inside, cut one open once and relatively clean hence the reason for the post

Probably overkill and expensive motoring, Colin. Try cutting the next element open and inspect for crap. Certainly sample fuel quality every oil change interval, and if clean, it'll go on to the next. To be really, cautious, drop some fuel from the tank/s and inspect, drain and filter if necessary, before replacing fuel. If you are going to throw money away every 10K, then may as well fit a CAV, or Franz inline and only throw $9 away instead of $40. Had a Franz on a truck once, change the toilet roll every 10k at .60c a pop. They filter to 1 micron, whereas factory filters are only 10micron.

Colin,
I'm just having some repairs done on a CAT 3408 I think it is, stick with what the warranty asks for if you don't it will be very very very costly. Plus make sure you only use the CAT coolant, the block I have has a hole in it the size of a ten cent peice caused by electrolosis ( spelling). I don't want to go into the costs it's frightening..... Keep the shiny side up