I know they didn't pick it just for the heck of it, it's just really thin oil for the lower states as what I've been told by several performance mechanics from Alabama. Was just wanting to get other opinions before I was to make a change.Serious? The engineers didn't pick that weight out of thin air. Stick with it.
Don't like the 5w, like you mentioned I don't see as much cold weather as other states. I've tried to find 10w-50 in other brands but the highest I was able to find was 10w-40. Preciate the incite though, guessing I'll stay with 5w-50 just will be changing brands. Thinking of Castrol, as it's the only other brand that has 5w-50 that I can find around here.What don't you like about the oil? I would stick with the recommendation from Ford. Your performance is not going to be affected and picking a different oil may increase wear.
If you are bent on changing the oil, you may be able to get away with changing the 5W, but I would not change the 50. The former is tied to cold temperature viscosity and the latter is high temperature viscosity. Maybe you won't see the colder temperatures that a 5W helps with but the engine will achieve the same operating temperature wherever you are. FYI, SAE50 actually has a higher viscosity than SAE30 at high temperature so I'm not sure why it would be called a thinner oil. These engines are not like the older engines that all used 5W-30 or 10W-30. It's your choice what you want to do, but I wouldn't recommend it unless you have modifications that dictate a change.
Here is a reference:
http://www.bobistheoilguy.com/viscosity-charts/
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Yes I have a Boss. I'm going to stick with it, but I'm going to change brands, thing is I can only find Castrol that has the same weight.With 5w50 I'm assuming you have a BOSS or GT-500. I'd stick with it
Did not think about Amsoil, researching now. Thanks for the suggestion man!Amsoil has 5W50
Was going on how it goes from thick to really thin when it warms up.Why do you think 5W50 is "thin"???
If you decide on Amsoil please use referral # 5336731Did not think about Amsoil, researching now. Thanks for the suggestion man!
All oil goes thin when heated and 5W50 is about as good as you can do without going to STP!!
BTW.....5W50 is "thicker" than 10W30.....the low number is effective weight cold and the high number is effective weight hot!!
Thicker oil will not lubricate better and WILL rob power!![/QU
going to stick with 5w-50, like in the above threads they didn't put that weight oil in there for no reason. Thinking of going with Lucas high performance 5w-50. Thoughts??
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