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Hey every1, this my 1st post. I have a 04 c320 I just purchased, and it has developed a leaking issue on the drive and passenger side. I don’t know much about this car, so i need help.
Like any leak, wipe up the mess and start up the car again and it'll be obvious. Most likely it's coolant. If this is the case, be sure to top up before you melt the engine.
Yes, it’s antifreeze, mt question is, where could it be coming from on both sides of the engine. Maybe the overflow tank, but on the driver side, it’s close to the firewall.
it’s definitely coolant. the overflow tank drains as well. i bought the car used, so i saw it had green coolant, but i read that it should be the blue, just like my Saab.
You'll have to dig around in the back and look for a wet spot. Wipe it down and you'll have your answer when a wet spot reappears. Unfortunately I don't know your particular engine but it's probably one of the plastic coolant pipes. Lower the coolant level, replace whichever pipe(s), and refill. With that said, if the engine has several plastic coolant pipes, you probably want to replace them all at the same time. If one has failed, the others won't be far behind.
The current factory coolant is blue. You'll want to flush out whatever is in there. Having the wrong coolant is detrimental to the life of these engines. Not sure where you are, but the dealer will likely have the coolant you need for a reasonable price.
All fluids on these cars are very specific. Using the wrong fluid can result in problems like seal wear or electrolytic reactions.
Last edited by slammer111; Mar 20, 2021 at 07:46 AM.
You'll have to dig around in the back and look for a wet spot. Wipe it down and you'll have your answer when a wet spot reappears. Unfortunately I don't know your particular engine but it's probably one of the plastic coolant pipes. Lower the coolant level, replace whichever pipe(s), and refill. With that said, if the engine has several plastic coolant pipes, you probably want to replace them all at the same time. If one has failed, the others won't be far behind.
The current factory coolant is blue. You'll want to flush out whatever is in there. Having the wrong coolant is detrimental to the life of these engines. Not sure where you are, but the dealer will likely have the coolant you need for a reasonable price.
All fluids on these cars are very specific. Using the wrong fluid can result in problems like seal wear or electrolytic reactions.
this is the coolant i currently use in my Saab, and it looks like it’s the same. my car is a 04 c320.
Yes Zerex G48 will work on these cars. Notice it says MB Approval 325.0. There might be other brands that will work, but Zerex G48 is the most common aftermarket product off the top of my head. Zerex G05 will also work, though that is under an older superseded standard.
I'm just wondering why the puddles look green in your photos.
Last edited by slammer111; Mar 21, 2021 at 01:38 AM.
Yes Zerex G48 will work on these cars. Notice it says MB Approval 325.0. There might be other brands that will work, but Zerex G48 is the most common aftermarket product off the top of my head. Zerex G5 will also work, though that is under an older superseded standard.
I'm just wondering why the puddles look green in your photos.
Thats the existing antifreeze that’s in the vehicle. i haven’t added the blue yet, cause it started leaking. what can make it leak on the driver side, in the area of the brake reservoir. there must be a pipe or hose the runs though that area...
The green stuff doesn't look factory at all. If you cannot be sure if the coolant is in the system is the approved stuff, you may want to do a full drain instead of just topping up. Maybe it's the photos, but the green appears to be a different shade compared to a mixture of G-05 and G-48.
In any case, keep the rest of us posted. I'm pretty sure the information would help out the V6 owners.
The green stuff doesn't look factory at all. If you cannot be sure if the coolant is in the system is the approved stuff, you may want to do a full drain instead of just topping up. Maybe it's the photos, but the green appears to be a different shade compared to a mixture of G-05 and G-48.
In any case, keep the rest of us posted. I'm pretty sure the information would help out the V6 owners.
Im pretty sure the green antifreeze is just the basic green antifreeze. I don’t think the previous owner took the time to check what antifreeze was needed. My real question, what’s in the brake reservoir area that flows antifreeze, cause that’s where the puddle is, by the under hood fuse box.
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