A mechanic said he adds 1 qt. of 20/50 to 10/40 when he changes oil. I asked about the "no Zink" in the new oil not good for older engines. I've used 10/40 for many years, now. Do you think this is a good idea?
Ford Q&AAsk Your Question
1994 Ford Thunderbird Question: Can you add a 20/50 oil to 4 qts. of 10/40 when changing the oil? 225k miles.
Answer #1asksteevies February 20, 2014, 06:14Master
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
Answer #2Greg's Orange Auto (14568 Answers) , Orange, CA - (714) 361-9386globalhelper February 20, 2014, 06:40Master
try lucas oil additive,its better than 20/50
Replypushrod, February 20, 2014, 07:27Master
Replyasksteevies, February 20, 2014, 07:30Master
I have dixie chopper , thats required , thats what i use
The lucas 15 40 diesel oil...awesome stuff..