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Old 03-22-2015, 09:19 PM   #1
jimmy1955
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Oil Capacity GMC 270?

My dipstick dosen't seem to give an accurate read and the manual says fill it to full. Curious a 270 being a "Big 6" how many quarts of oil is recommended for an oil change?
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Old 03-22-2015, 11:01 PM   #2
jimmy1955
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Re: Oil Capacity GMC 270?

I found it looks like 8 quarts for 6 cly 5 for 8 cyl.
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Old 03-22-2015, 11:34 PM   #3
G&R's57GMC
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Re: Oil Capacity GMC 270?

Hmmm, fill it until its full ....

I had a customer drive in with smoke pouring out of everywhere. She asked for oil and I asked "Have you checked the dip stick ?"

She said "Whats, a dip stick ?" She would just look in the oil fill hole in the valve cover and keep pouring in oil until she could see it.

Short story I drained 30 quarts out of her 230 cu.in. Chevy 6. DOH ! And showed her how to use the dip stick.
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Old 03-22-2015, 11:46 PM   #4
jimmy1955
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Re: Oil Capacity GMC 270?

Wow. Now thats a new one. When I bought my rig it didn't have a dipstick so purchased one out of a 248 so lil weary of accuracy.
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Old 03-22-2015, 11:47 PM   #5
jimmy1955
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Re: Oil Capacity GMC 270?

Sorry meant manual indicates fill until the full line on the dipstick.
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Old 04-11-2015, 01:40 AM   #6
SCHRUMGMC
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Re: Oil Capacity GMC 270?

Quote:
Originally Posted by G&R's57GMC View Post
Hmmm, fill it until its full ....

I had a customer drive in with smoke pouring out of everywhere. She asked for oil and I asked "Have you checked the dip stick ?"

She said "Whats, a dip stick ?" She would just look in the oil fill hole in the valve cover and keep pouring in oil until she could see it.

Short story I drained 30 quarts out of her 230 cu.in. Chevy 6. DOH ! And showed her how to use the dip stick.
Sheesh, how stupid can an individual be
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Old 04-11-2015, 10:05 AM   #7
whitedog76
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Re: Oil Capacity GMC 270?

30 quarts? Geesh. I used to work in a small repair shop and I've seen some crazy stuff too.

I'm not discounting your story, but I don't see how the engine would even turn over with 30 quarts in it. I would think it would hydro-lock.
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