anybody use 10w 40?
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anybody use 10w 40?
Hey guys, I plan on using Castrol 10w 40 next summer for the added protection. I don't believe in these lighter oils. I'm even thinking about 20w 50. What do you think?
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Re: anybody use 10w 40?
Originally Posted by MikeD
Hey guys, I plan on using Castrol 10w 40 next summer for the added protection. I don't believe in these lighter oils. I'm even thinking about 20w 50. What do you think?
I do know a local mechanic with a 200K LeSabre in which he uses 20-50. Myself I'd jump to the 20w-50. I've noticed my 130K miles LeSabre using some oil. So I may go to that after April and warmer weather next year.
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Re: anybody use 10w 40?
Originally Posted by MikeD
Hey guys, I plan on using Castrol 10w 40 next summer for the added protection. I don't believe in these lighter oils. I'm even thinking about 20w 50. What do you think?
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Originally Posted by toastedoats
what is your reasoning behind prefering heavier weight oils?
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Originally Posted by toastedoats
what is your reasoning behind prefering heavier weight oils?
Got to remember it takes HP to turn a oil pump. thicker the oil harder to pump.
thus less MPG
most of the time GM has awsome oil press. in ther engs. so thick oil is not needed.
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Originally Posted by MikeD
Originally Posted by toastedoats
what is your reasoning behind prefering heavier weight oils?
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Since most of the engine wear happens at start up, the thicker the oil the longer it takes to reach the critical parts in your engine and hence more wear. Most of the car companies are going to very thin oil recommendations like 0-20 and 5-20. I would not go this thin but I believe 10-40 is to thick. There is a great site called Bobistheoilguy -see what some experts have to say. Roger