Originally Posted by kwilford
In fact, all newer Honda's call for 5W-20 oil. I was only able to get that for my 2003 Odyssey in a Mobil 1 synthetic a couple of months ago. Only Honda was selling it for while. Apparently the new Honda engines have such close tolerances that they require the lower viscosity oil as way to improve mileage, even beyond the typical 5W-30.
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Keith,
Why not go all the way? Mobil offers 0w20, 0w30,0w40. I wrote a letter to Castrol years ago inquiring about different viscosities possibly voiding the warranty on my then new Dodge Caravan. Their response was that as long as it met the API/SAE standards it wouldn't void the warranty.
Harold