I did an intake swap about a week ago and the antifreeze that went into the engine is still there. Can i leave it there till i get a chance to change the oil. or will it damage stuff. Thanks.

 

I don't see why you shouldn't change it ASAP. It only takes a small percentage of water in oil to cause significant damage. As a good rule of thumb, anytime you expose engine internals (e.g. - intake manifold swap, valve stem seals, etc.) change the oil. It probably won't hurt anything, but it's not worth the risk.

 

I blew up a 88 mustang gt motor that way,By not changeing the oil,I though I could drive it a short distance before the cahnge boy was I wrong.

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86Z28, GM 350, Jet perf Q-jet & chip Dual snorkel air cleaner, Edelbrock performer intake, Edelbrock headers, Edelbrock cat-back, Off road pipe, MSD 6AL, Accel Super Coil, Taylor Spiro-pro wires, Rapid fire plugs, Jet fan switch, World class t-5, Hurst Short Throw Shifter, Ram Flywheel, Center force dual friction clutch,Aluminum drive shaft, BW disc rear 3.45's & a posi, PBR calipers, Earls braided brake lines, Polygrapite bushings all the way around, poly tranny mount & torque arm mount, Hotchkis lower control arms & panhard rod, Rancho limiter straps, KYB struts & shocks, Gm Wonderbar, Edelbrock strut tower brace, SSM sub frame connectors, Jamex lowering springs, Carbon metallic brake pads, Crossed drilled rotors, Mobil 1 Tranny fluid & motor oil, GM syntheic rear end oil, K&N, Grant stering wheel, 1,200 watt system, Jet Black Paint, 91 Z28 rims, 92 wing, Tinted windows.

 

Remove it immediately.

Coolant is very corrosive to bearings.

I had a 2.8 that had an intake leak and the customer didn't want to fix it so he gave us the truck.....it sat for 2 weeks with coolant still in the oil.

I pulled the engine and the whole inside of the engine was rusted. Rockers,pushrods,etc.

The bearings were all wasted and had actually rotated a crank bearing in the block.

Keep in mind that the engine ran fine and didn't knock until it was run with water in the oil. It was only run until the temp started to go up. Then it was towed to my shop.

I'm not saying this will happen in all instances...its just food for thought.

I would change the oil ASAP.



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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

change it, don't drive anymore. It will kill your engine.

 

Oh i'm not driving it its in for the winter i WILL change before i start it up. I just didnt know if it sitting at the bottom could ruin somehting thanks for the warning guys

 

The mixture sitting at the bottom will develop moisture and start the rust process.

I would put new oil in it, start it and let it warm up...then park it for the winter.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

change the oil dude!

 

Today!

 

Even if you do not run the car, the water will settle on top of the oil. Maybe just enough to hit the crank. Can you say rust ball!

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1992 Pontiac Firebird 350/Six Speed
1987 Toyota Pickup 383/500+ HP

 

i heard that mixing half oil and half anifreeze maeks the engine run cooler.

 

The GM Tech down the street said let it sit a littel cause teh antifreeze is heavier then the water and when i pull the plug the water will come out first.

 

Still, either way, when that plug is pulled, the oil and antifreeze are going to come out. C'mon man, do the oil change!


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

I WILL do the oil change when i ahve TIME I go to school get home at 3 start work at 3 get home at 9 and the car isnt even here its put away 10 miles away. I'm not it he mood to go over there at 9 at night in the middle of the dark and try to change oil

 

HEy dude it's YOUR car and u do what you want. Don't come back here whining that your engine will need to be rebuilt though. LOL

 

Well hey do use a favor and let leave it n there and time how long it takes for your motor to go to hell.

 

It doesn't matter to "let it sit for a little" the water will seperate overnight.

All we are trying to say is that letting the water stay in there any amount of time is too long, period.

You are increasing the chances of rust and bearing failure every day you leave it in there.

You asked for our advice, you got it.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

[This message has been edited by Engineboy (edited November 08, 2000).]

 

I know I know If somebody was asking this question I'd be yelling too. I am cutting class tomorrow to change it ,but i wont be able to start the car cause it still in apart. Does that matter?

 

The important thing is to get the water out of the crankcase.

I would start it and circulate the good oil as soon as I could.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

$5 in oil, $1500 in rebuild... doesnt seem worth it to me.

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Mark Lock
- 86 IROC-Z - Torn down for 383/SuperRam T56 setup
- -= IROC Online =- - The site dedicated to the IROC-Z

 

It wasnt that money was the problem. I didnt have any time. But today it is now changed and the old oil looked good. Just a little discoloration.