SH luder 06
my car has 122,000 miles. 97 type sh i am currently using 5w-30 full synthetic. Is this bad should I be using a high millage oil a lot thicker than 5w30, a synthetic blend maybe? my car burns about a quart of oil weekly, is that normal? Keep in mind I drive 60 to 80 miles a day for my work. Should I switch to a thicker oil?