2014 E350 vs. E550, need help deciding
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
HEATSOAK TELL SIGN
I used to have this standard leak from the first day too - It's a stock marker of extreme heat above 22psi cap venting pressure.
Keep an eye on your coolant level while it's cold.
> STOCK HEATSOAK...
While driving coolant is circulated in radiator but as soon as the pump stops coolant is boiled by the heat accumulated in dry pistons.
Spray cooling sealed pistons disables that.
Keep an eye on your coolant level while it's cold.
> STOCK HEATSOAK...
While driving coolant is circulated in radiator but as soon as the pump stops coolant is boiled by the heat accumulated in dry pistons.
Spray cooling sealed pistons disables that.
Last edited by CaliBenzDriver; Aug 4, 2025 at 05:00 PM.
Thread Starter
Newbie
Joined: Jun 2024
Posts: 7
Likes: 4
W212
I used to have this standard leak from the first day too - It's a stock marker of extreme heat above 22psi cap venting pressure.
Keep an eye on your coolant level while it's cold.
> STOCK HEATSOAK...
While driving coolant is circulated in radiator but as soon as the pump stops coolant is boiled by the heat accumulated in dry pistons.
Spray cooling sealed pistons disables that.
Keep an eye on your coolant level while it's cold.
> STOCK HEATSOAK...
While driving coolant is circulated in radiator but as soon as the pump stops coolant is boiled by the heat accumulated in dry pistons.
Spray cooling sealed pistons disables that.
Out Of Control!!
Joined: Apr 2019
Posts: 12,191
Likes: 6,889
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
CONGRATULATIONS!!
It's a great car purchase, that will serve you well with comfort and power on tap.
It just needs timely attention to prevent surprises. You can celebrate by buying yourself a "LAUNCH codeREADER Elite MB" ~$135 or use your existing scanner to survey faults.
Many of us will be happy to help.
It just needs timely attention to prevent surprises. You can celebrate by buying yourself a "LAUNCH codeREADER Elite MB" ~$135 or use your existing scanner to survey faults.
Many of us will be happy to help.
Last edited by CaliBenzDriver; Aug 4, 2025 at 09:40 PM.
