Azraelo
Mechanical
- Aug 16, 2009
- 13
Hello!
So this European oil maker states that its synthetic oil can work properly in both: Otto and Diesel engines (automotive applications). It states having many decades of experience to back its product.
Even further, it claims that this oil can work safely with almost any popular fuel (CNG, diesel, gasoline) and deal with their different combustion nature and by-products. The only one difference should be the service life of the oil.
I was Googling them, verifying their reputation, and they look reputable.
I have to say I'm not a chemical engineer. I' a mechanic.
So just for curiosity I send a sample of new, fresh oil to the lab. The only one different thing I noticed is an increased level of Ca (almost 3000 ppm).
TBN value was fairly normal (11.4 mKOH/g) compared to the mineral-based oils.
But lab technician was honest and said that his method for analyzing TBN was not suitable (carbonyl-based reagent), since this is an synthetic oil. Suggested to look for a lab with "potentiometric method" for properly analyze TBN.
Finally, I found a reputated lab with such "potentiometric method" for synthetic oils, but it is expensive.
My goal is to trace a proper synthetic oil baseline in order to run a program of oil analysis for a small fleet running on stock, dedicated, stoichometric-mixture, CNG engines.
Two questions:
1. Is it correct to analyze the synthetic oil TBN with potentiometric method (ASTM 2896)?
2. New synthetic oil are, in fact, this good? I mean: one oil can work with different fuels?
Any positive comments are appreciated!
--
Azraelo
So this European oil maker states that its synthetic oil can work properly in both: Otto and Diesel engines (automotive applications). It states having many decades of experience to back its product.
Even further, it claims that this oil can work safely with almost any popular fuel (CNG, diesel, gasoline) and deal with their different combustion nature and by-products. The only one difference should be the service life of the oil.
I was Googling them, verifying their reputation, and they look reputable.
I have to say I'm not a chemical engineer. I' a mechanic.
So just for curiosity I send a sample of new, fresh oil to the lab. The only one different thing I noticed is an increased level of Ca (almost 3000 ppm).
TBN value was fairly normal (11.4 mKOH/g) compared to the mineral-based oils.
But lab technician was honest and said that his method for analyzing TBN was not suitable (carbonyl-based reagent), since this is an synthetic oil. Suggested to look for a lab with "potentiometric method" for properly analyze TBN.
Finally, I found a reputated lab with such "potentiometric method" for synthetic oils, but it is expensive.
My goal is to trace a proper synthetic oil baseline in order to run a program of oil analysis for a small fleet running on stock, dedicated, stoichometric-mixture, CNG engines.
Two questions:
1. Is it correct to analyze the synthetic oil TBN with potentiometric method (ASTM 2896)?
2. New synthetic oil are, in fact, this good? I mean: one oil can work with different fuels?
Any positive comments are appreciated!
--
Azraelo