oil ratings????

[99PontTA]

i bought havoline 5-30 and now have noticed its a gf-3 oil...i looked at the mobil 5000 and its rated gf-4...what does this mean...is the mobil better?Please someone explain all this oil mumbo jumbo before i lose my mind trying to figure what oil to buy.

 

[vad]

GF-3 vs GF-4

One more.

I would also have bought GF-3 Havoline over GF-4 Mobile.

[ October 21, 2005, 02:56 AM: Message edited by: vad ]

 

[99PontTA]

ty for the info

 

[BigAl]

quote:

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Originally posted by 99PontTA:
i bought havoline 5-30 and now have noticed its a gf-3 oil...i looked at the mobil 5000 and its rated gf-4...what does this mean...is the mobil better?Please someone explain all this oil mumbo jumbo before i lose my mind trying to figure what oil to buy.

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It means that the Havoline is old stock. If you're going to buy a conventional oil, just buy whatever name-brand is on sale in your viscosity. Newer oil is generally better, but the jump from GF-3 to GF-4 wasn't huge. Other than that, there's not that much difference between brands. They're all made to meet the same standard.