Noise deadening with Redline 60wt race oil?

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Hi everybody, will I open a can of worms? I just added about half bottle of Redline race oil 60wt because the level was a bit low, so with the sump full thats about 4.5 quarts of oil total. The oil in the sump was mobil one 15w50. I believe noise has gone down and the car revs a bit easier , despite the thicker oil. (vintage automobil, never lighter than 50wt... now the mixture is between 50 and 60 wt, towards 50wt..) is this just my imagination?
 
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I don't know about your car, but when I went from M10W40 to redline 5W40 on my old boxster S, the noise decreased dramatically. The boxster has a noisy valvetrain with about an 8 foot long timing chain and the engine sits 12 inches behind you, so you really notice any difference in noise. BTW, I wouldn't use too much race oil as it has minimal detergents so not really for street cars. Designed for race cars that will change the oil often.
 

berlyn

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Hi saaber1 thanks for the response. This vintage sweetheart has no noise insulation, thats why I noticed it just like you.
 
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As I understand, there are two ways of reducing noise: by deadening vibration, and by reducing friction in certain parts. The Red Line you added is obviously thicker than the Mobil 1, and it's also slipperier because it's a pure racing oil. I wouldn't be at all surprised if it made your engine quieter.
 
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I don't know what spec your vehicle calls for but a 50W or 60w oil is pretty thick. It's an engine, not pancakes.
 
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20w50 hm in the summer is the heavest i would go 60 wt is really too heavy in my opinion.. i like either Pennzoil or valvoline high mileage oils i have seen them work well..Good luck
 
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