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Old 01 March 2007, 11:10   #41
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10microns.
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Old 01 March 2007, 11:11   #42
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The mix after filtration.
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Old 01 March 2007, 11:19   #43
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...so the moral of the story is... "use a water separator, but no filter 'n let the engine digest those pesky little bugs.."....
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Old 01 March 2007, 11:54   #44
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If Soltron's claims that the bug will be broken down small enough to pass through a filter and be burned off are correct, then the bug should still be in the jar. Plainly, it isn't and most of it was stopped at 35microns.

I use Crossland filters and they claim the filter material to be 98.7% efficient at 2microns so even tiny particles which may have passed this test at 10microns would likely be trapped by a diesel filter.

Some thoughts following this: This sample I extracted from my tank in November last year. It was stored outside so, say, about 10c average temperature and during the winter there was no noticeable growth in the bug. As can be seen in the jar, the growth was very noticeable within 3 days and the jar was kept indoors at room temperature, approximately 20c. It appears the bug is likely to be much more of a problem in summer or in warm climates.

The bug in the original jar was left undisturbed and it continued to produce sediment which sank to the bottom of the water layer. I'll put a pic at the bottom of this post.

Providing a boat had an effective water separator and filter system, it would seem good practice to have the fuel tank pickup pipe at the lowest point of the tank rather than having a sump or dead volume. This would ensure any water, sediment or bug would be lifted out of the tank immediately the engine was started. It may also be a good idea to allow the engine to run a while before moving the boat, in order not to mix up the water and sediment, so that it will be lifted from the tank. Following this, an inspection of the water separator before moving off might be worthwhile.

If a boat is in regular use and the fuel pick up is at the bottom of the tank, I would reckon it is not likely to suffer a bug problem other than it being discharged into the tank from an outside source, ie. bad fuel.

As for Soltron....I've wasted my money and it's fek all use. Whether is gives better fuel economy, lower exhaust emissions and less exhaust soot as claimed, I've no idea....but I could have a guess.

Here's the sediment building up.
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Old 01 March 2007, 13:31   #45
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As for Soltron....I've wasted my money and it's fek all use. Whether is gives better fuel economy, lower exhaust emissions and less exhaust soot as claimed, I've no idea....but I could have a guess.
Perhaps I can answer that,

Pete
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Old 01 March 2007, 13:39   #46
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WTF....
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Old 01 March 2007, 14:10   #47
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Thought you would like that
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Old 01 March 2007, 15:24   #48
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Never seen a coal fired RIB before
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Old 01 March 2007, 17:34   #49
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Never seen a coal fired RIB before
Thanks, but she may well have been on active service during the Falklands, so not doing to badly
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Old 03 March 2007, 20:40   #50
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Thanks, but she may well have been on active service during the Falklands, so not doing to badly
Be great for avoiding customs.....
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