Originally Posted by Ron F
Old Smart--I seem to recall you asking for old oil filters to be sent to you. Have you received any and, if so, could you please give us the results of your analysis. thanks.
I did have a used OEM smart/Mitsu/Tokyo Roki sent to me which I cut at the time. My observations were that it was very small profile, and very well constructed. At the same time I cut a Yamaha/Tokyo Roki 5DM-13440-00, and found them absolutely identical, right down to the tool marks on the innards. A little research turned up the fact that Tokyo Roki prides themselves on manufacturing efficient, small profile filters.
I was going to cut some new Purolators and a Mobil 1 M1-108, but before I did I decided to contact Purolator USA, Mobil, and AMS for their take on the smart/Mitsu/T.R. Purolator and Mobil actually did testing, while AMS' response was "It looks like it would work." I sent the Purolators (L14612 and PL14612) to Kane (Evilution) for his evaluation.
After "benchmarking," Purolator subsequently listed the better L14612 semi-synthetic and the best PL14612 full-synthetic fleece in their application guide for the 2008 smart. I note that they are still listed though I sent them Kane's photos showing the exposure of the longer 14612s. Performance-wise, Purolator determined that the 14612's characteristics equaled or exceeded the OEM.
Likewise, Mobil examined the OEM and found their M1-108 the equal of or better than the OEM (filtering capacity, flow rate, bypass valve spring rate, etc.). At the time I talked with them they were waiting to install one on an actual smart to determine clearances before listing it on their application guide. I cannot find a Mobil 1 application guide to see if it is now listed. Physically, the 108 is 2mm less in diameter and 14mm longer than the OEM, but it does not protrude below the bottom of the car though it does have a 20% greater internal volume than the OEM.
AMS' response was not good enough for me to consider the AMSoil EAO12 full-synthetic at this point.
smart uses the M-B Sheet 229.5 for their lube guide, which also includes the necessity to use a full-synthetic fleece filter, and which the OEM smart/Mitsu/T.R. is not. Neither is the semi-synthetic M1-108, but it is a good compromise if the Mitsu engineers are happy without a full fleece.
The only reason I went looking for alternatives to the OEM was for more immediate availability and maybe a little better price. My situation isn't so bad with my dealer 50 miles/1 hour away, but there are lots of owners around the country that are hundreds of miles and many hours away from their dealer.