SOMS states that at for vehicle with recommended 3,000-mile oil change interval, a microGreen filter should be installed with new motor oil. Then, only the filter should be swapped out at 6,000 miles, 12,000 miles, and 18,000 miles. Fresh oil and another new filter go in at 24,000. The cost savings are clear, and when looked at through the lens of reducing oil usage, significant. If the engine oil (assume five quarts per change) were refreshed every 3,000 up to 18,000 miles, the comparison is 30 quarts versus five if using the microGreen system.
According to Kirchner, following the microGreen oil change regiment won't affect your vehicle's warranty coverage because, "Manufacturers do not 'require' oil changes at given intervals. These oil change intervals are 'recommended,' so owners aren't putting themselves at risk provided they follow our protocols. Their vehicle's oil will stay clean."
MagnaFilter - A Filter Enhancer
For clean oil fanatics, Boss Products offers another product to consider: their MagnaFilter. This spin-on device goes on the engine prior to the canister filter (again, sorry cartridge users). The standard filter (or, conceivably, a microGreen filter) then screws onto the MagnaFilter. A powerful ring magnet sucks ferrous particles from the oil as it enters the main filter canister (your filter of choice goes here). Of course, any size shrapnel in your engine is bad, so whatever the MagnaFilter can remove is good.
Len Kelsey of Boss Products notes, "Of course everybody knows that metal fragments are bad for an engine, but they also cut down the efficiency of the oil filter. Over time, the metal can actually shred the paper filter elements."
Unlike drop-in pellet magnets or magnetized oil pan drain plugs that have been advertised in the back of automotive magazines for decades, the MagnaFilter's more elegant design does a better job of ridding metal shards from oil. Boss Products, an Australian company, recommends a 35,000-mile change interval for their product regardless of how often the vehicle's engine oil is drained and refilled. Information designed for fleet buyers can be found here (www.MagnaFilterInfo.com), while John Q. Public can order the product here (www.BossProducts.US).
But remember...
Extending oil changes can be a good idea provided drivers monitor crankcase oil levels. Regardless of how clean the engine oil is, if there's not enough in the pan, the engine won't fair well at all.