steve
I have been using humbrol clear gloss , goes on really well , just don't try to put it on too thick all at once , 2-3 light coats .
then mix your oil wash , apply , dry for a couple of minutes and wipe off what you don't like . let it dry over night . on my victory I didn't apply a dull coat , I wanted a washed out wood effect , but if you satisfied with your finish give it a coat , then you can use things like tamiya panel line accent colour's , another highlighted oil colour , in spacific area's , even some ground up soft pastel crayon's , these are great for rust effect's , and the light one's for salt damage .
hope this help's my friend
steve5