loves_off_roading
Full Access Member
It's time to give the Liberty an oil change. It is recomended to put 5W-30 in the 3.7. But mine has over 100,000 miles on it. I've heard that older engines should use 10W-30 in the summer (It's about to warm up here). Is it okay to keep useing 5W-30 all year round or should I switch to 10W-30 for the upcoming warmer weather?