Quote:
Originally Posted by Logic
Borate Esters as used in Amsoil etc. ie: Certified Oils:
Borate Esters are used in engine oils to improve performance and protect against damage. They: - Reduce friction: Borate esters reduce friction in engine oils, which can help the engine run more efficiently.
- Prevent sludge: Borate esters prevent sludge from forming in engine oils.
- Improve lubrication: Borate esters improve lubrication properties in engine oils.
- Extend oil life: Borate esters can extend the service life of engine oil and delay maintenance.
- Improve thermal stability: Borate esters provide thermal oxidative stability.
- Improve pumpability: Borate esters ensure low sludge formation and pumpability at low temperatures.
- Improve anticorrosion: Borate esters provide anticorrosion at high temperatures.
Here's the formula:
Boric Acid + Alcohol = Borate Ester + Water
B(OH)₃ + 3 ROH → B(OR)₃ + 3 H₂O
NB
That the reaction does not only go one way.
Any water in the oil and:
Water + Borate Ester = Boric Acid + Acohol
That means that just about everyone already has a tiny amount of Boric Acid in their engines, with no ill effects as far as reacting with the rest of the additive package in the oil goes. |
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Yes, the AMSOIL, Signature Series, 5W-30, 100% polyalphaolefin synthetic motor oil has one part per million ( 1-PPM ) borate-ester.
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In the 176 fluid ounces of oil in the test engine, there is:
* 0.000176-ounces of borate ester friction reducer
* 0.177056-ounces of Molybdenum disulfide friction reducer ( 1,006-ppm )
* 175.822768-ounces API Group V PAO oil and other additives ( 998,993-ppm )
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Oil viscosity is :
250 cSt @ 0-C
104 cSt @ 37.8-C
10 cSt @ 100-C
3 cSt @ 150-C
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No metal-to-metal surface contact during engine tests.