Barr’s leak or K seal

[aj4cks]

I’m about to renew my antifreeze with concentrate bluecol. I remember Roy Braddock, former Jowett agent and specialist now deceased, recommending Barr’s leak to help prevent H/G problems, leaks and lubrication of the water pump. It’s now expensive on eBay, £32 for 150 ml. I have also used k seal. What’s your preference?

[Keith Clements]

Use G05 antifreeze which has the correct type of inhibitor. Do not use any of those sealing additives which might clog your waterways. Probably OK if you have a leak but inhibitors have developed greatly since Roy Braddock's time. Do not use OAT or blue antifreeze. See Topic by doing search.

[aj4cks]

Thanks Keith

[Forumadmin]

viewtopic.php?f=2&t=3053&p=22976#p22976

[aj4cks]

Thanks for advice will probably just stick to the appropriate antifreeze

[Keith Clements]

G05 is the appropriate antifreeze for the unusual mix of metals in the Jowett engine. It may find leaks that you never knew you had which have become blocked with the sulphates caused by corrosion of the aluminium. Many engines I have dismantled have a gooey sludge in them, often in large quantities, usually with traces of blue antifreeze as well. The GO5 keeps them clean inside. A stocking filter in the top hose helps to stop grit and rust recirculating and damaging the water pump seals and helps prevent the radiator cores blocking. The GO5 should help with cooling as it keeps the barrels free from rust and reduces cavitation through wetting of metal surface.

[Mike Allfrey]

Interesting,

I am currently running with K-seal in my Jupiter, due to a small leak in the radiator core. I also use the green Tectalloy inhibitor. My water pump currently has ceramic rings front and rear of the impeller, not a drop leaked from there since. The pump is also bolted to welded flanges on the timing cover, it now stays vertical.

On a 35 degrees day, in lengthy stop start traffic, the temperature gauge climbed to just on the 75 degrees mark. As soon as the traffic eased, the gauge needle stayed at 50 degrees.

My back will not allow me to lift the radiator out, and radiator repairers are now a rare species in our locality. So, K-seal it is.

Ford tractors, back in the 1980s introduced coolant filters, a bit more deluxe than a wife's stocking, trapped an amazing amount of debris, including casting sand. There were other interesting catches from Australian farm dam water as well!

All the best,

Mike A.

[aj4cks]

Thanks Mike