i have a 40 plus british seagul and it wont start it was running before and i just took it out onto the stand started it and it gave a sign of starting so i gave it another pull and no start. even with ether spray in carbie an spark hole it would start but run for 3 seconds. i thought these motors were the best outboard motor for the world! and i was wondering if thicker oil than sae 90 for gearboxes existed and what is it called?<br />thanks