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Blu Thru Boat Engine Salt Flush Tablets

Blu Thru Boat Engine Salt Flush Tablets


Availability: 10 in stock SKU: XC1168
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Blu Thru is a safe and fast boat engine salt flush system that improves marine engine cooling performance by removing built-up salt residue, reducing corrosion in cooling chambers and heat risers.
Suitable for inboards, outboards and jet skis.
Blu Thru is made by us in Chesterfield at our premises. Blu Thru has been lab and field-tested without harm to internal engine seals or gaskets. 
In fact, Blu Thru is designed to lubricate and protect your engine seals, water pump and gaskets.
This product is also a total clean no scrub salt removal and inhibitor system for your boat, jet-ski, motor, tackle, fishing rods, fishing reels, trailer, dive equipment, beach furniture and seaside home windows. 
NOTE 4 x tablets will make 1 gallon of general cleaning solution!! So a 40 tablet bottle represents great value compared to other boat engine flushing products on the market.
• Non-Toxic 
• Biodegradable 
• Non – Hazardous
• Detergent free
• Helps prevent corrosion and engine damage by removing salt deposits
• Leaves a protective wax and corrosion inhibitor on all surfaces
• Aids in Lubricating gaskets and rubber seals
• Conserves fresh water and time, (complete flush takes less than five minutes)
• Tablet form saves space and eliminates mixing.
Made in the UK on our premises!


Why a tablet ?
• A tablet bottle stores easily on your boat or PWC
• 40 tablets makes up to 10 gallons of cleaning solution!!
• If you spill your tablets you simply pick them up without loss or clean up.
• Tablets will not freeze when stored in a cold climate.
• Non-Liquid tablets are perfect for travel
One 40 tablet bottle of the Blue-thru tablets will provide a number of
engine flushes based on recomendations below.
Recomended Tablet Usage For Engine Flush & Boat Wash:
PWC                                            2 Tablets
All Inboard Engines                  4  Tablets
Outboard Engines 1-50HP      2 Tablets
Outboard Engines 51-150HP  3 Tablets
Outboard Engines 151HP +    4 Tablets
Boat/PWC/Equipment Wash   1 Tablet

Product Info & Care

Weight110 g



Blu Thru

3 reviews for Blu Thru Boat Engine Salt Flush Tablets

  1. 4 out of 5


    Just started using Blue Thru on my new jet ski will see the results later on, just a warning to those living in high humidity area’s, the tablets crumble to powder even with the sachet in and cotton wool on top. I keep the bottle in the house now.

  2. 5 out of 5


    Bought this to flush out a suzuki outboard, had been having problems with the tell tail blocking up all season, what a fantastic product, pumped it through and since then got a nice jet out the tell tail.

  3. 4 out of 5

    Mr D Hedgeland

    I use Blue Thru during winterisation of my customers outboards, many are present during the engine service, I use a small rectangular loft tank around the lower gear unit and tend to add around 6 tablets each time. The customers seem impressed as the cooling becomes deep blue, I run the outboards it long enough for the water temperature to rise so the powerhead thermostat opens allowing the cleaning of the head. I was quite sceptical of the actual effect of the product but wasn’t actually that bothered as it looked the part. One day I surprised myself by throwing a heavily salt encrusted anode into the bottom of the tank when I poured out the Blue Thru I found a gleaming lump of zinc. I was so impressed I now use it on my own outboard

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