I have 94 Honda Accord with aprox. 92K. I have never used synthetics in the gearbox over the life of the vehicle. However, the owners manual calls for any reputable 10W30 or 10W40 oil to be used in the gearbox. Will the Mobil 1 SuperSyn be too slippery for the synchros to engage properly? I've heard that synchros need "some" friction to work properly. Is there any synthetic manual transmission fluid I could use? My goal is to improve extreme cold shifting.