![]() ![]() ![]() In this method, the oil sample is placed in a U-shaped Glass capillary tube. let’s discuss: Capillary Tube Viscometer. You can do it with an oil viscosity test kit. If you don't like to read - here are some important highlights from the blog by an ENGINEER and member of SAE, ASME and so on but the link above has it all - a long read, takes a while to get through, but he knows his stuff - it's not "a buddy of mine blew a cam and he did this so obviously this is better" BS that gets tossed around a lot - that sort of talk isn't proof of anything, it's not a test and it's not scientific at all. How to measure the viscosity of oil: As viscosity is a very important part of any oil & lubrication so you should also know about the way to measure the viscosity of the oil. ![]() So more isn't better - in fact more can be worse!! and adding additives to a good oil can turn it into a bad oil. That is also mentioned here in 540rat's blog. I will toss in here information I found from a test done by a university in conjunction with oil research - that the protective layer formed by zddp does not keep building - it reaches a point and stops. He also discusses that at length - and why the factory recommends a less ideal oil (5w-20) - that's because of CAFE rules. This guy has done enough testing and gathered enough information from research around the world to also show that generally speaking - GENERALLY, not meaning ALL, but for the most part all else being equal, that most modern engines in good condition do best with 5w-30 oil. Place holder for factual information related to engine oil viscosity or "weights" and wear resistance testing. ![]()
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