Another source of data is ISO 8217 (a google will bring you a number sites who have the details listed).
Like most standards they refer to the data at reference conditions. You need the data at specific conditions so you may find the spreadsheets in Cheresources useful: http://www.cheresour...wnloads&mid=987. In the file library you will also find some spreadsheets for heat exchanger sizing and so forth.
However, it is strongly recommended that you first of all become familiar with the underlying calculations and their history.
You should read for example, the Manual of Petroleum Measurement Standards and research the ASTM D341 calculations.
Spreadsheets are useful tools but are no substitute for first of all understanding the nature of the property you are interested in. Without this you will have no idea if the answers you get are to be relied upon or treated as a random number generator. Most calculations have some sort of limits to their applicability.
ASTM D341 is a log.log relationship. Such calculations need to be used with care.
Incidentally, why would you be heating diesel to 176C?
Unless what you refer to as Diesel is in fact something more viscous.