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coolant with low nitrite level

Just had coolant sample done on my new glider with 12.7 detroit and everything seems normal except polaris flagged at level 2 abnormal nitrite level loww at 738 what does this mean.The coolant only has 34,000 miles on it ,also it is conventional[green] 50/50.

Thanks!

Answer this question I have this problem too

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Thanks that makes sense.I'll check filter for now but will probably change over to elc as you suggested.I appreciate it.

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Check the water filter. With green coolant it should have a sca additive package in it - you might've gotten a blank and your additives are running low. You can also dump the green and switch to extended life (usually red) which doesn't require any additives.

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Not sure why you would want that green junk in that engine anyway. Detroit is recommending ELC nitrite free coolant. It is shown that ELC will prevent liner cavitation better than standard SCA style green and purple "fully formulated" coolants and keep water pumps better lubricated. As another note, Detroit wants a no nitrite formula in their engines, such as their own label Powercool or Rotella Ultra ELC or Delo ELC-NF. Plus you never have to check for SCA's and other rot. Just checking freeze point level and adding an extender at 300,000 miles. ELC is a better product, is more cost effective, and is recommended by the Technology and Maintenance Council, the de facto standard for commercial truck maintenance. Lower maintenance, lower lifetime cost, better protection. Why not use ELC?

As a side note to this, the shop that put the rebuilt 12.7 in my glider messed up and filled with purple fully formulated coolant (similar to the green stuff). Within the first 10,000 miles, I had the cooling system completely flushed and cleaned out and refilled with no nitrite ELC. Shops, including OEM dealers are not always up to speed on the right thing to do. Check with a Detroit only shop like Interstate Power Systems and they will get you on the right track.

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Thank You as always.

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Hank Duncan will be eternally grateful.
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