|10-02-2015 06:23 AM|
|09-30-2015 04:42 PM|
A change from 5w-20 to 5w-30 will make virtually no difference in startup wear, but also will not make much difference to compensate for higher running temperatures. In fact, there are some 5w-30 oils that flow better at cold startup than some 5w-20 oils. It could, however, have a slightly negative effect on fuel economy to make that change, as mentioned.
|09-30-2015 04:24 PM|
I was posting similar on a different website yesterday how I would have no engine related concers towing my Popup with my Focus 80MPH with 0w-20 oil in it in the Texas heat.
|09-30-2015 10:44 AM|
"More confusion occurs because people think in terms of the oil thinning when it gets hot. They think this thinning with heat is the problem with motor oil. It would be more correct to think that oil thickens when it cools to room temperature and THIS is the problem. In fact this is the problem. It is said that 90 percent of engine wear occurs at startup. If we are interested in engine longevity then we should concentrate our attention at reducing engine wear at startup.
Oils are chosen by the manufacturer to give the right thickness at the normal operating temperature of the engine. I will say this average oil temperature is 212°F, the boiling point of water. On the track that temperature is up to 302°F. It is important to realize that these are two different operating environments and require different oils.
I will discuss driving around town first. Everything I say will be based on these conditions. At a later time I will discuss track conditions. Everything I say will be as accurate as possible without looking everything up and footnoting. I am trying to be general not ultra specific.
One thing that is no longer important is the ambient temperature. Older automotive owner manuals often recommended one oil for the summer and another for the winter. This is still necessary for air cooled engines but is no longer a consideration in pressurized water cooled engines. These engine blocks are kept at around 212°F all year round. The oil is around the same temperature as well. This allows for a single grade oil all year round. Again, this is not the same as on the track where the coolant temperature is slightly higher and the oil temperature is much higher."
|09-29-2015 10:03 PM|
|PrDawg||My question is I am in Houston with temps that run to 110 ambient and one of worlds worst traffic jams. Does it hurt to move to 5W-30 to compensate for the heat. Will be running full synthetic. Will also be running CAI, Magnaflow cat back and tune.|
|09-27-2015 01:49 PM|
Exactly...my 1st free dealer oil change done @ 1100 miles had a 4100 mile return time..
|09-27-2015 12:54 PM|
|sailor||Stickers are good for business, easy way to double Oil Change revenue.|
|09-27-2015 12:46 PM|
I would say ask them, but chances are they're too incompetent to give you a straight answer.
Free is nice, but you couldn't pay me to let someone else change my oil. Especially a dealer.
|09-27-2015 12:42 PM|
|Dorzok||Had my first oil change. Was a little worried cuz the info message didn't come on 'til 10,230 miles. I let the dealer do it because it was free. But they stuck a sticker on the windshield said next change is due at 15,000. Why would they do this? I mean the owners manual says change it when the car tells u to. Did they use a substandard oil? One that doesn't meet Ford's minimum standard?|
|08-31-2015 09:23 PM|
I'm going to take their recommendation and run the current oil for 10k miles. I'll do another analysis when I get there.
I originally wanted to do a comparison between the syn blend and syn oil, but I don't think I'll be doing that if the syn blend is holding up as well as it is (although, granted, it is a new car, so that might have something to do with it).
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