fuel contamination
Submitted: Monday, Mar 03, 2014 at 14:18
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Alan T4
Hi, my name is Alan first time user of the
Forum so be kind.
Have been interested in reading about the problems people have experienced with fuel problems, mainly in the Prados as we are looking at buying a 2008 diesel from a mate. He has never had a problem and has only done the regular Toyota
services.
Wondering if the people who have either put in an extra fuel filter and or changed the standard one at regular intervals have had any of these seemingly very costly repairs that I see people have been quoted.??
Cheers Alan T4
Reply By: Ross M - Monday, Mar 03, 2014 at 16:40
Monday, Mar 03, 2014 at 16:40
G'day Alan
This sounds silly but, lots of people quote people who have never had a problem, there fore the problem wasn't there for it to happen. The ones who do have a problem are the ones who then have had a problem.
It can happen to anyone but doesn't happen to everyone.
Regular Toyota
services aren't any surety of prevention. There have been cases where the service provider is quite possibly the cause of some of the problems, ie no change of filter.
Luck of the draw there.
Adding a degree of insurance over and above the OE filter, as Rosco has done, does exactly that, add an insurance factor, and also provides a second, although it is usually placed as a first line of defence, for catching and detection of nasties.
I use a similar thing for that reason.
Cheers
Ross M
AnswerID:
527578
Reply By: Member - Phil G (SA) - Monday, Mar 03, 2014 at 20:52
Monday, Mar 03, 2014 at 20:52
My suggestions to prevent contamination:
- Buy good diesel fuel from high turnover diesel outlets (I use BP truckstops and BP Ultimate from recently constructed servos). Don't buy
supermarket or similar discount diesel.
- Don't let your tank stay empty for periods of time - keep it full to prevent condensation.
- Use an algicide - I use Chemtech which also dewaters the fuel.
- Change the fuel filter once a year (before my winter trips) irrespective of kms travelled (usually travel 12-25k per yr). A fuel filter change needs to be impeccably clean - never undo the hoses from the top of the filter, or you might introduce dirt into the outlet. I shudder when I've watched others change filters.
- Drain the bottom of your fuel filter every couple of months - very easy to do on Toyotas (impossible on our VW).
I've serviced my own diesel vehicles for many years and have yet to see water or algae during a filter change. I think you make your own luck.
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527600
Follow Up By: Ross M - Tuesday, Mar 04, 2014 at 20:06
Tuesday, Mar 04, 2014 at 20:06
G'day Phil
If the chemtech dewaters the fuel where does the water go?
Does it aid the precipitation of emulsified water out of the fuel?
If it doesn't do that to help collect it in the bowl then it must still be going into the system it seems.
FollowupID:
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Follow Up By: Member - Phil G (SA) - Tuesday, Mar 04, 2014 at 21:07
Tuesday, Mar 04, 2014 at 21:07
Gday
Ross,
The people at Chemtech told me last year when I phoned them that the formulation is now a water precipitant - so emulsified water coalesces and drops to the bottom of the tank or the filter (where it can be detected and removed).
The previous formulation some years back was a water dispersant - so it would mix the water with the diesel and it would go through the pump. The old motors could handle this.
The blurb on their website say "Handles water more effectively for greater engine protection, by facilitating the break-up of stable fuel-water emulsions."
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