Oil question, need fast answer

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May 7, 2004 | 01:59 PM

soggynuts

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Joined: Feb 2004

Posts: 1,494

From: Petaluma, CA

Car Info: 1942 ford pinto

Oil question, need fast answer

will it hurt my engine to put in a quart of 10/40 if i have three quarts of 10/30 in it already?

May 7, 2004 | 02:06 PM

Mulder

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Joined: Nov 2002

Posts: 1,646

From: NYC

Car Info: 02 WRX WRB

It will increase the overall viscosity of the oil somewhat. Shouldn't damage anything but in general it's best not to mix viscosities or brands.

May 7, 2004 | 03:06 PM

RS WRC

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NO it won't hurt it.

May 9, 2004 | 03:43 AM

gdogg

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From: rightBehindYou, HI

Car Info: 1973 Huevo Ranchero

Quote:

Originally Posted by soggynuts

will it hurt my engine to put in a quart of 10/40 if i have three quarts of 10/30 in it already?

were you drastically low??

aloha
greg

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