M279 Improvements Backward Compatibility
05-02-2021, 08:50 PM
#51
Junior Member
Still no issues. I even used the tube a few months ago when I changed the trans fluid and it worked fine and the dipstick went in it without any problems.
The bracket that’s about half way down the tube is not connected on my car, I’m not sure if that makes any difference. At some point a mechanic must have been working on the car and never reattached it and I’ve left it that way.
You absolutely need to vacuum bleed the system when you are finished. Good luck with the job!
also, these pliers make the job soooooo much easier
The bracket that’s about half way down the tube is not connected on my car, I’m not sure if that makes any difference. At some point a mechanic must have been working on the car and never reattached it and I’ve left it that way.
You absolutely need to vacuum bleed the system when you are finished. Good luck with the job!
also, these pliers make the job soooooo much easier
Thanks for the pliers advice.
Eric
05-20-2021, 12:45 PM
#52
Junior Member
Still didn't get the time to make the changes. What are you guys using for a cooling fluid mixture is it 50/50, I have read on some forums, not specific Mercedes, that some people use a higher percentage water, reasons mentioned are that the pump can do a better job circulating a lighter mixture.
What are your experiences? does anybody know what the Mercedes recommended mixture is? (I'm in Texas)
Also I saw a video on youtube (
) with a intercooler fill on a Maybach, a little bit more modern vacuum pump and improved procedure but basically the same process, so just another confirmation regarding your bleeding systems.
Eric
What are your experiences? does anybody know what the Mercedes recommended mixture is? (I'm in Texas)
Also I saw a video on youtube (
Eric
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JJKCMO (05-22-2021)
05-21-2021, 03:34 PM
#54
Super Member
I'm running 50/50, or close to it. I need winter protection down to at least -20, preferably lower. I don't think any different mix is going to make a measurable difference in effectiveness. If you live where you never see freezing temperatures, you could run straight water with a wetting agent... but then you're giving up the corrosion protection of the coolant for the advertised (not tested or proven in your car) corrosion protection of the wetting agent.
People often get wrapped up in theoretical marginal improvements. The pump should be more effective with a lighter mixture? Maybe. But would it be more effective by any measurable amount, let alone enough to be of any practical value? I'd love to see some actual flow testing. And in the case of our intercoolers, there would have to be a BIG difference in cooling to make any detectable difference in the performance of the car.
So, the short answer -- Mercedes says to run 50/50, I run 50/50.
People often get wrapped up in theoretical marginal improvements. The pump should be more effective with a lighter mixture? Maybe. But would it be more effective by any measurable amount, let alone enough to be of any practical value? I'd love to see some actual flow testing. And in the case of our intercoolers, there would have to be a BIG difference in cooling to make any detectable difference in the performance of the car.
So, the short answer -- Mercedes says to run 50/50, I run 50/50.
05-22-2021, 12:04 PM
#56
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Exige S | V70R | CTS-V wagon | JKUR | 13 S65 (Mocha/Armagnac)
I'm running 50/50, or close to it. I need winter protection down to at least -20, preferably lower. I don't think any different mix is going to make a measurable difference in effectiveness. If you live where you never see freezing temperatures, you could run straight water with a wetting agent... but then you're giving up the corrosion protection of the coolant for the advertised (not tested or proven in your car) corrosion protection of the wetting agent.
People often get wrapped up in theoretical marginal improvements. The pump should be more effective with a lighter mixture? Maybe. But would it be more effective by any measurable amount, let alone enough to be of any practical value? I'd love to see some actual flow testing. And in the case of our intercoolers, there would have to be a BIG difference in cooling to make any detectable difference in the performance of the car.
So, the short answer -- Mercedes says to run 50/50, I run 50/50.
People often get wrapped up in theoretical marginal improvements. The pump should be more effective with a lighter mixture? Maybe. But would it be more effective by any measurable amount, let alone enough to be of any practical value? I'd love to see some actual flow testing. And in the case of our intercoolers, there would have to be a BIG difference in cooling to make any detectable difference in the performance of the car.
So, the short answer -- Mercedes says to run 50/50, I run 50/50.
05-22-2021, 03:23 PM
#57
Super Member
Hahaha... it would certainly be a thin market, wouldn't it? I keep wondering if I should buy one of those little OBD widgets they sell all over eBay for $29 that guarantee massive HP/TQ gains AND better mileage just by plugging it in... 
150 Horsepower Gain is Very Easily Felt.
145 lb-ft Torque Increase Greatly Boosts
Hill Climbing and Acceleration From Low Speeds
6 Miles Per Gallon Boost Saves Gas and Fuel Costs.
150 Horsepower Gain is Very Easily Felt.
145 lb-ft Torque Increase Greatly Boosts
Hill Climbing and Acceleration From Low Speeds
6 Miles Per Gallon Boost Saves Gas and Fuel Costs.
