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Old 08 September 2018, 02:37   #1
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Country: UK - Scotland
Make: Valiant
Length: 4m +
Engine: Mariner 60hp
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Hi from Edinburgh!

Hi. Iím new to Rib net. I bought my first rib only two weeks ago!

I wondered if anyone has any experience of using the Blu Thru engine cleaner. What are peopleís thoughts and primarily, is it safe to use around the rib sponsons?

Iím planning to winterise my mariner 60hp 2 stroke and as I havenít owned it for long Iím not 100% sure of how well it has been flushed by its previous owners. I haven bought 1 litre of RYDLYME however I must have misread the instructions as ill need to buy another 20 litres given its recommended dilution ratio.

Maybe Blu Thru is a more viable option if I use a flush bucket?
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Old 08 September 2018, 04:05   #2
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Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
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Engine: Tohatsu 60hp + aux
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Welcome to the forum JeffS.

No direct experience of Blu Thru, but I've used Salt Away solution before. I assume they both do the same thing. If your boat is garaged then there's no need to fully winterise the engine. If it lives outside under a tarpaulin, then yes winterise.

I've looked at injection systems for the solution if running on muffs, but quite honestly, a flush bucket will be less hassle. Run the outboard with the solution for a good 20 minutes until it's up to temperature. You can hose down the sponsons afterwards, but no reason for them to be touched, as it's just the telltale outboard stream. Remember and top up the water. My Tohatsu pees like a shire horse!

I'd remove the thermostat afterwards. You can lightly brush and salt build up off it with a soft head wire brush. You'll probably need a new gasket when refitting.

Remove the spark plugs and spray fogging oil into the cylinders.

Also drop the gear oil. Any water in there then you risk cracking the gearbox if there's a hard frost. You can fit a new impeller for peace of mind. Straight forward process then refill with fresh oil.

I also spray 3M white grease on the linkages to avoid corrosion issues.

Given engine is new to you, remove the propeller. Good opportunity to grease the splined shaft and check there's no fishing line back there. You'll need a new propeller split pin. Ensure it's stainless steel.
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Old 08 September 2018, 05:26   #3
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Thanks a lot, that’s really helpful.

I’ll send the rydlyme back and try something like salt away which I can use via a flushing bucket.

Cheers for the advice. Very pleased I joined the forum!!
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Old 08 September 2018, 05:48   #4
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I tried blu thru, waste of money imo. Better using cheap cash and carry vinegar solution in a bucket.
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Old 08 September 2018, 13:21   #5
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Thanks a lot, thatís really helpful.

Iíll send the rydlyme back and try something like salt away which I can use via a flushing bucket.

Cheers for the advice. Very pleased I joined the forum!!
Buy citric acid cheaper
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Old 08 September 2018, 14:51   #6
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Buy citric acid cheaper
i thought about a gallon of white vinigar poured in thru the flushing (no running ) port where you connect a hose
Any use ?
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Old 08 September 2018, 15:45   #7
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i thought about a gallon of white vinigar poured in thru the flushing (no running ) port where you connect a hose
Any use ?
Vinegar works neat not sure about diluted ratio wise you buy citric acid in powder form I put 1 kg in a dustbin full of water £5 to clean dead coral for my marine tank it desolves the surface of the rock over 24 hours which is basically sea water made into rock by hard corals.
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