...should I be worried?
I visited my dad in Manila, Philippines and found out that his Lexus with 56k miles was filled with 10W-40 Shell oil by his home service mechanic. This is the most popular oil in Manila, which is sold at most service stations.
I promptly showed my dad the manual which states that 5W-30 or 10W-30 oil is recommended. Would there be any adverse effects to the engine given that it had this oil in its sump for more than a year now? My dad probably only drives it less than 4000 miles per year.
I told him already to have the oil changed to 5W-30. Would 10W-30 be fine since it's cheaper and avg temperature year round is around 87 deg F?
I visited my dad in Manila, Philippines and found out that his Lexus with 56k miles was filled with 10W-40 Shell oil by his home service mechanic. This is the most popular oil in Manila, which is sold at most service stations.
I promptly showed my dad the manual which states that 5W-30 or 10W-30 oil is recommended. Would there be any adverse effects to the engine given that it had this oil in its sump for more than a year now? My dad probably only drives it less than 4000 miles per year.
I told him already to have the oil changed to 5W-30. Would 10W-30 be fine since it's cheaper and avg temperature year round is around 87 deg F?