Engine oil weight and fuel economy
I currently have Mobil 1 15w-50 in my engine. I did this in attempt to stop a smoking problem I had only at high rpms (started around 6k). Previously I had 5w-30 which was the recommended oil, but down here in Texas it gets really hot so I went up. I'm thinking about compromising with 10w-30. Anyone think I'll gain another mpg or two by using a thinner oil? I'll do at least one more tire pressure test to verify my results, but then it might be interesting to change my oil and see what happens.
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Yep
I think that you can gain 1 mpg through switching your oil. I asked if I could run 5w 20 in my car a while back but I was told no by the honda people, so I am sticking with my 5w 30, but you're using really heavy oil now, I think you can go to 10w 30 without a problem if you can't use 5w 30.
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i use 5/30 in the motor, and
i use 5/30 in the motor, and 10/30 in the tranny for hondas...
you could use a lighter one, as long as weather permits it. |
Temps
What kinda temps would I have to be in the use a 5w20?
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just warmer climate im
just warmer climate im pretty sure.
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5w20 is something Ford came
5w20 is something Ford came up with. It is a synthetic blend.
I hear the best oil to save gas with is Mobil 1 synthetic 0w30. As well as giving a bit better mileage you can go farther between changes. I use Mobil 1 5w30 and change it every 6000mi or 6months. If I had a non turbo car I would even go farther between changes. |
Hmm
I got 5k miles, what do you think about 0x30 in a car recommended for 5w30?
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Re: i use 5/30 in the motor, and
Quote:
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Re: Hmm
Quote:
i'm also wondering about 0w30. how would you know if you were using too light weight? or would you just have to find out when your engine is worn out early? |
Think you'd just have to
Think you'd just have to find out and live with it, there might be a method to diagnose oil, but I do not know it. I ended up staying because I couldn't find 0w30 locally and the car was long overdue for a change. Got another change coming up in 2k miles and I'm waiting on results from h-t where a guy is dyno testing like 20 kinds of oil. (I'll try to pick my brand by this, but I'll want 0w30.)
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