Hello ,
My 2000 Ford Conversion Van with the 5.4 litre calls for 5W30 ... At times in the summer I tow heavy , usually at the weight limit allowed ..
I am considering the switch to Mobil 1 , since I take the vehicle off the road for winter and start up every few weeks , I figure the start up oil circulation in N.Y. winters would be better with the synthetic , but my concern is during summer towing , since the oil is a bit thinner , upon normal or a bit above normal operating temperture , might I be doing some premature wear on my 5.4 ? I hate to go a little heavier in summer with the oil as this vehicle is still under warranty till 2004 and the manual strictly calls for 5W30.... comments would be appreciated ... Larry B.
My 2000 Ford Conversion Van with the 5.4 litre calls for 5W30 ... At times in the summer I tow heavy , usually at the weight limit allowed ..
I am considering the switch to Mobil 1 , since I take the vehicle off the road for winter and start up every few weeks , I figure the start up oil circulation in N.Y. winters would be better with the synthetic , but my concern is during summer towing , since the oil is a bit thinner , upon normal or a bit above normal operating temperture , might I be doing some premature wear on my 5.4 ? I hate to go a little heavier in summer with the oil as this vehicle is still under warranty till 2004 and the manual strictly calls for 5W30.... comments would be appreciated ... Larry B.