90lumina3.1 Posted November 2, 2002 Report Share Posted November 2, 2002 ok... i just got the oil changed on my lum today... it seemed like my tbody cleaning was helping with the car, except that it started using more fuel. but after i got the oil changed, the engine started idling really rough, and feels weak. any ideas? :?: grease monkey says i have a leak on my tranny pan, and the side pan, and an oil leak somewhere, but ive learned better than to trust them . thanks for any help, cause i sure am clueless this time ps: just a side note, but why did GM insist on using a 440T4 on the 90s? i kept thinkin i had a 4t60, but its a 440t4, and whats the difference in em anyways? Quote Link to comment Share on other sites More sharing options...
Brian P Posted November 4, 2002 Report Share Posted November 4, 2002 The 4T60 IS the 440T4, just GM used a different system of naming them (and others) Quote Link to comment Share on other sites More sharing options...
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