I have a 1992 SC300 With 127,000 miles. The car has never given me any problems till now. The gas gauge will only move about an 1/8 tank when filled. The low fuel light still works and I have replaced the in tank sending unit( it is nothing like the SC400). Is there any one that could please help me?? The dealer wants $500 to try to "fix" the problem with no guarantees.