oil question for gsr into 95 civic

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ok, after swapping in my 99 gsr motor into my civic, I drove it for about 1000 miles and then decided to change the oil because the engine had been sitting for some time before i swapped it in.... after another 700miles I just happened to look at the oil change sticker that jiffy lube put on the top of my windshield and it said 5w30!!! i know that normally it should be either 10w30 or 10w40.. is 5w30 ok or do i need to go back to jiffy lube and kick the fucktards asses??
 
im using 10w30 in mah gsr.. at about 70k miles.. i think it depends on mileage??
 
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