That is all a matter of preference in my opinion. My opinion is that is surley wouldnt hurt. For the sample kit through Oil analyzers INC it will run right at 30.00 wich includes 2-way shipping.



Now if it was me. I would do an analysis probably at around 15000 miles. Now if all is good i would not do one on the next oil change.



It is ok to mix Amsoil and the ''other'' brands together. No harm done there. But it will shorten the performance and longevity of the amsoil by a small amount. On the first oil change It will be near impossible to get all of the ''other'' brand out of the engine. It's just not praticle. But thats the only reason I recomend a Oil analysis the first go around. It's not the oil that will be the problem. Thats good to 25,000. It's whats already in your engine that i would be concerned about.