I have a 85 supra 5sp 5mge stock except filter an muffler. I got my tags taken away for 30 days. I get them back on monday. I have been cranking my car every other day. Today I drove it when I hit my breaks it started smokeing a thick white smoke from the tailpipe I drove it around the block three or four times still the same. When i parked it it smoke alittle at start up. Also have a break leak. Only does it when I slow down. Any ideas I thought it might be a head gasket or valve seal.