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I put 1.5 bottles of Techron concentrate in my car according to the label and I’m getting better mileage out of my car. I’m 100% sure I’m getting more distance because I take the same trip from South MS to Mobile, AL everyday. I usually get two full trips then the needle being between the E and...

How long do you wait to replace rotors? Or do you just measure the rotor thickness and wait until it’s out of spec. Because my 2013 Benz has 75k miles. Thickness nominal is 36mm and minimum is 34mm but mine are measured at a surprisingly 35.9mm. So save the money and wait? The brakes works fine...

2013 Mercedes e550. 722.9 transmission that’s also found in some American cars. What are signs of overfilled transmission? Bouncing tach? Rough shifting? Slipping gears? So I did a transmission flush. Felt fine after I did it, even drove on it for a month. But the other day I noticed the rpm...

2013 Mercedes e550 coupe. The biturbo one. Car drives great. Extremely fast. But once in a blue moon on the Highway the car would hesitate to accelerate. Wont kick down gear either when smashing the gas pedal. After a few seconds car drives normally. What gives? There aren’t any codes, and car...

Sorry for the dumb question. But would parking like this every night on the curb be bad for suspension? It's like 5 inches tall and it's a gradual curb. Thanks.

Tried to install some SS brake lines. I must have crossed threaded a few rotations. I backed it out and threaded them correctly. But it leaks, doesn't make a full seal. It's at the connection where the SS brake line meets the caliper. So do I need a new caliper now? Thanks in advance.

Are wheel bearings supposed to be serviced at a certain intervals or only when bad? I'm getting different informations on the internet. It's a 2003 clk500, the dual front inner/outer bearings.

I just stripped the bolt hole in the worst possible place, the caliper bolts. It's a 2003 clk500, brembo style brakes. It's in the rear, dual pistons. What can I go about to fix this? Thanks in advance.

Hello fellas. I have a problem getting my ac compressor pulley off. The pulley is making a loud whining noise, and I read that people have changed their pulleys and the sound went away. Bad bearing issue. The compressor still works fine and blows cold air. The problem is most shafts have a hex...

I'm experiencing a shudder at idle in drive. Once I take off the shuddering disappears at all speeds. No shudder in neutral or park either. Anyone have an idea what happened? Started happening after I changed my tranny fluid, which I've done before but never experienced shuddering. Clk500 722.6...

The pin that holds the parking brake cable to the parking brakes/expander fell out due to some negligence from me and I’m not sure what would be the best way to put it back together. When I reassemble it, it just falls out again. I’m thinking soldering or maybe liquid steel/jb weld. What do you...

Doesn’t seem like my car came with them stock, do I need them if I’m changing out my control arms? I see that they are for sell...

When I’m driving at higher speeds like on the interstate, you can feel a slight wobble coming from left from axle. And when braking you can definitely feel it. I change the rotor but problem still persists. The shaking comes from the car, no shaking in steering wheel or gas pedal so I’m guessing...

Hello everyone. I have a small problem, although I'm slightly mechanical inclined, this is a new problem for me. I am currently trying to change out my voltage regulator and the metal screws holding it in place are stripped and stuck really bad. What would be your way to getting it out? I cannot...

My transmission parking linkage is leaking transmission fluid very slowly. I have a feeling that I can use an RTV sealant to seal the rubber boot. Does anyone have a sealant in mind? Thanks in advance

I know it's another thread comparing the two but I can't find a definitive answer. Anyone have experience with both?

Car is coming up on 140k miles, 12 years old. Serpentine belt looks slightly used and abused but not bad for 140k miles but I'm guessing I should replace it. Question is should I also replace the tensioner and idler pulley? There is absolutely no noise or squeeling coming from it. My finger once...

Servicing ac. Got the gauges and the pump. Ac is currently holding vacuum. But one problem, the gauge kit did not come with an oil injector. How should I add the oil after the vacuum? I'm guessing add oil into the line and let the can of refrigerant shoot it in? Thanks in advance

Car's ac blows good at night when it's 75 degrees, but doesn't blow cold air in the daytime when it's 95 degrees. I added the correct amount of refrigerant, but it reads low. 37 psi at 90-95 degrees outside. Someone told me I may have introduced moisture in my system when I emptied it out prior...

I just changed my outer tie rod to ONLY the front left axle. Now it veers to the right ever so slightly. I need to adjust the alignment, maybe a turn or two of the tie rod. Since the car veers to the right slightly, do I need to move the front left wheel inwards or outwards? Thanks in advance. I...