Need Opinions (Advice) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jared stewart · 02-13-2004, 10:33 AM

I have a '79 350 that blew a gasket and sucked all my antifreeze into the oil pan.

Now I have a friggin' chocolate milkshake to deal with. My questions is: Should I run something like auto transmission fluid through the motor to help clean it out, or just change the oil and run it for a little bit, then change it again?

**swervin ervin** · 02-13-2004, 10:54 AM

I would remove the oil pan and clean it out. Then put in fresh oil and filter. Start it up and run it til it gets warm. Drain it again and new oil and filter. Run it for 500 miles or so, and change the oil and filter again.

I suggest doing this pretty quick before rust starts to form on the cylinder walls, which only takes a day of so.

Tom · 02-13-2004, 08:18 PM

Id just drain the pan for a couple hours, run a few quarts of good oil threw it for a minute or two, then drain, refill and dont worry about it.

02-13-2004, 10:33 AM	#1
jared stewart Silverado Stew Join Date: Jan 2004 Location: Ewing, MO Posts: 184	Need Opinions (Advice) I have a '79 350 that blew a gasket and sucked all my antifreeze into the oil pan. Now I have a friggin' chocolate milkshake to deal with. My questions is: Should I run something like auto transmission fluid through the motor to help clean it out, or just change the oil and run it for a little bit, then change it again? __________________ - 1997 3/4 Ton Ext. Cab LB 4x4 6.5L Diesel - 1979 3/4 Ton Longbed 4x4 "Farm Truck" - 1984 1/2 Ton w/ '99 Vortec 350/700R4 2x4 FOR SALE

02-13-2004, 10:54 AM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	I would remove the oil pan and clean it out. Then put in fresh oil and filter. Start it up and run it til it gets warm. Drain it again and new oil and filter. Run it for 500 miles or so, and change the oil and filter again. I suggest doing this pretty quick before rust starts to form on the cylinder walls, which only takes a day of so. __________________ Mike 1985 Chevy C-10

02-13-2004, 08:18 PM	#3
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,748	Id just drain the pan for a couple hours, run a few quarts of good oil threw it for a minute or two, then drain, refill and dont worry about it. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.



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