1994 Ford Thunderbird Q&A
1994 Ford Thunderbird Question: Can you add a 20/50 oil to 4 qts. of 10/40 when changing the oil? 225k miles.
Yeah thats good , everybody has a diff opinion about oil I personally put 20/50 in everything i own , rite down to zero - turns Never had problem - asksteevies
try lucas oil additive,its better than 20/50 - globalhelper