Whats going on with this?

Messages
353
Location
Australia
Hi all, I have just had a VOA done on a oil, and noticed that the TBN number is much different to what is listed on the spec sheet. See link: http://tds-au.bp.com/bpglis/oztds3.nsf/d9626f8424d26a26ca256a790031248a/e1e926c16f38064eca256512007c745f?OpenDocument Product data sheet claims TBN of 10.5 VOA shows TBN of 7.9 Even the Vi index was lower by 8 units. What's the go with these test sheets, don't they have to be even slightly close to what the product really is? Do you guy's think that by dropping down to 7.9 from the impressive 10.5 there is much lost or much difference when used with a petrol engine?
 

Francis

Thread starter
Messages
353
Location
Australia
Hi Pablo Was sent to Australian laboratory services See there link: www.e-monitor.com.au TBN Test D2896 Can Lab's give major differences in results? I'm just worried that it's not as a good oil I thought it was. TBN of 10.5 is really good I thought.
 
Messages
47,941
Location
Everson WA - Pacific NW USA
Labs can and do vary a lot, but I know nothing of this oil. D-2896 should detect all the detergent and dispersant base - but if the lab didn't take the time to go all the way to the end point then the results maybe a lower number than a "typical" data sheet.
 
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