wow it is true, wen i done my b16a2 conversion i didnt know this and used ep80w90 and drove it for about 3 days like it until a friend of mine kindly told me! lol now my gearbox i knakered but wen i first started it, it was noisy from start up got a little quieter with the 80w90 could this have knakered the input shaft bearing? iirc those bearings are lubed buy the gbox oil right?