Yeah, i have to agree with SRK. I don't think that it is a good idea to just guess what filter could possilby increase your capcity, completey ignoring that different cars run at different pressures and efficiencies. I don't think there is any "science" behind that more will cool better, however if you overfill your pan, the crankshaft will whip the oil up, creating air... and wherever there is air, there isn't oil, and wherever there isn't oil there is metal on metal. I worked for Lexus for a few years, now work for Toyota, the filter from a Es300 is a G1, and will most likely screw onto the threads but might be a little shallow for the filter housing. The Toyota filter for a V8.. Tundra, GS, etc.. is a D3. I have never seen a purolator on a vehicle in a minnesota, however mostly i see OEM or valvoline, or some other reputable brand. I don't think there is a real big gain to doing this, but there could be a profound after effect if for some reason the filter just didn't sit right on the metal filter flange. Just for what it's worth. Ps, you should ALWAYS change your oil every 3,000 miles, the GS did not leave the factory with synthetics so don't think for one second you are doing it favors running over the 3k with "5 or 10 thousand mile oil".