Oil is leaking by the driver's side of the bottom part of the radiator for a 1995 Chevy Astro 4.3L rear wheel drive vehicle. Is the oil cooled by the radiator? If so, it looks like a hose goes in then out, and may be damaged. Does it cost much to repair, and is it hard to repair on your own?
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If there is any bolt head at the bottom of oil pan, that would be the one. I had a 1995 Astro with a 4.3 and the plug was at the front. Generally the plug will be at front or rear of pan and on the side.
could becoming from ur oil cooler lines that go into rad,,,could have internal crack in rad,,,pull dip stick out & ck to see if motor oil is low or a grayish color,,if ok ck trans fluid to see if is low,,have to find out what kind of oil residua is in the over flow jug
The passenger right side of the car doesn't have any flanges for cooling system, if that's correct then your radiator has a leak or puncture.
The driver side of vehicle has both the in and out flanges for the radiator. Very common to see leak at the drain valve leaking (not closed tightly). In the same area would be bottom flange of radiator which the composite flange is degrading and causing the leak.
The middle part of the bottom engine compartment is where your oil/coolant cooler assembly just above the oil filter. A loose oil filter could be the cause 95% of the time and 5% would be a bad o-ring from the oil cooler to the oil filter flange.
The radiator has a transmission and engine oil cooler lines to it too. One of the oil lines are leaking, if you know which one that's have the battle. I believe the transmission line is on the passenger sides and the oil cooler line is on the drivers side. Look at where the lines connect to the radiator and see if there is signs of the leak. You may need to spray it down with brake cleaner if you not sure if it's a new leak or old leak from the accident.
Good luck and hope this helps. And what do you mean by rear case gasket?? You mean the gasket that connects the transmission to the transfer case, or the rear O ring yoke gasket.
Crawl under he car, it is on the bottom of the tank useualy on the drivers side (it is there, look on both side tanks), it is black plastic with a key shaped paddle to open the drain, it turns counter-clockwise, u can't see it from the top
On the drivers side of the differential, towards the front, there will be a 1" circle, with a sunk in square spot in the center. This is where you put oil in. Use a 3/8" drive socket wrench to unscrew it. (it fits right in the square sunk in spot) WATCH THE KNUCKLES! It hurts if you bang them, trying to loosen the plug. LOL When you get the plug off, stick your finger in the hole, and see if your finger comes out with any oil on it. The oil needs to be filled to the bottom of that hole. When the oil starts coming out of the hole, then you screw the plug back in, and you are done. IF, the rear diff has plenty of oil in it, then you may have another problem, like (inner/outer) bearings.