Mixing up OAT

[rhyds]

I'll be swapping the rad on my 45 soon, and need to know how strong to make the coolant. Is OAT 50/50 or less?

[Karl]

It will state the strength % on the bottle


50/50 is normally suitable for most

Should give around -37

[Rhubarb]

Nov 24, 2012 21:16:26 GMT 1 rhyds said:

I'll be swapping the rad on my 45 soon, and need to know how strong to make the coolant. Is OAT 50/50 or less?

As with any antifreeze it's 50/50 max

[Deleted]

I was told OATS will only register 50% on a floating ball type of anti-freeze tester, need a refractometer to check mix. Could be true. Doesn't matter with a fresh 50/50 mix but worth knowing. I'm not even sure if OATS can damage ally engines or gaskets. Could have a google and find out.

Can buy refractometer from ebay china about £15, or Sealey sell the same for about £50 last time I looked.

[Karl]

Nov 24, 2012 21:49:53 GMT 1 @tomcauser said:

I was told OATS will only register 50% on a floating ball type of anti-freeze tester, need a refractometer to check mix. Could be true. Doesn't matter with a fresh 50/50 mix but worth knowing. I'm not even sure if OATS can damage ally engines or gaskets. Could have a google and find out.

Can buy refractometer from ebay china about £15, or Sealey sell the same for about £50 last time I looked.

I payed around about $90 for mine about 10 years ago

[Deleted]

I bought from china, maybe two years ago, was about £15 to the door, took about a week, exactly same as sealey and others, works perfectly.

Wonder if neat OATS does only register 50% on a floaty one ? Might try one day.

[Karl]

Nov 24, 2012 21:59:08 GMT 1 @tomcauser said:

I bought from china, maybe two years ago, was about £15 to the door, took about a week, exactly same as sealey and others, works perfectly.

Wonder if neat OATS does only register 50% on a floaty one ? Might try one day.

No I'm sure the floaty balls will measure


I never used to trust mine
As it seemed to give the same reading on every car


That's why I went to Reflectometer