abraxas, could you please inform us of what motor you are going to use, as this info will help us in determining if you need to add nitro to your fuel , as some motors do require it. Secondly, a synthetic oil used broadly across the world is "Cool Power oil", You mix this with methonal at the rate of 4, to 1, or 80%methonal, and 20% cool power oil. For the majority of engines this is a good mix, any nitro is added as a percentage of the methonal, that is if 10%nitro is used then only 70%methonal is required , the oil content remqains the same at 20%.
Finally, welcome to the wonderful world of model flying, and have a merry Christmas
the_madgenius, instructor down under , Australia.