Drain intervals can vary based on service life and the severity of duty your engine sees as well as the formulation of the motor oil you are using. Most racing oils intended for severe duty in high performance engines have less detergents, so their starting TBN, or total base number, is lower than these long life oils. So it is very important to do UOA to determine the proper drain intervals as well as to determine a baseline for the condition of your engine which will allow you to monitor the health of your engine.

Vehicles subjected to very short drives or sustained operation in heavy traffic with lots of idling should indeed be serviced more often, just like a race car should. Regular used oil analysis is the best way to determine ideal drain intervals for your driving habits - a good rule of thumb is to change the oil with the TBN, or total base number, is reduced by 50% of the original total. This also requires you to also know your oils virgin TBN - we have VOAs for most if not all oils our customers would be using and if we do not, we will find a VOA or test it ourselves for you at no extra cost. With this knowledge in hand, using a quality motor oil, like Brad Penn or Swepco, with proper filtration and regular service is the best thing to do for your engine and to protect your investment.

By choosing to let LN Engineering handle your oil testing needs you will also be helping to contribute to our global database of UOAs to share with our automotive community which will be posted on onto our website in regular intervals (your name and any personal information will be kept confidential).

Price includes one (1) pre-paid sample kit including TBN analysis and shipping to you for the sample bottle at no extra charge. Price shown is valid only with purchase of a minimum of one case of Brad Penn or Swepco motor oil.

Your results will be emailed to you in PDF format in 1-2 weeks after you have shipped your sample to the lab (postage not included), and as always, we will be available to answer any and all questions you have about your results or choice of lubricant.