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  #1  
Old 10-10-2006, 03:01 PM
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Arrow Oil Question, Help!!!

I have a ticking sound coming from the drivers side. I cannot diagnose whether it is coming from the valve area, or exhaust area. I know that cam oilers are a common problem, but i dont think the sound is coming from my valve area, and the tick gets faster with accelleration, while cam oilers cause a constant tick, correct??

I have to change my power steering rack out, which is getting taken care of, and I got an oil change and switched from regular oil to synthetic.THE TICKING DID NOT START UNTIL I SWITCHED TO SYNTHETIC OIL, LITERALLY A FEW HOURS AFTER. It comes and goes, it usually stops after a a few minutes of driving.

When the ticking sound is present it gets faster with accelleration. Could switching to synthetic cause this sound? Should i switch back?? What is the recommended oil for a 1997 E420? If anyone can answer my questions i would greatly appreciate it. Thanks

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Old 10-11-2006, 02:13 AM
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anyone there????
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Old 10-11-2006, 12:06 PM
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I cann't help you with the noise diagostic but to answer you oil question, no, synthetic shouldn't cause any problem except for maybe minor leakage with old gaskets. For the recommended oil for your 97, here's a link.

http://www.whnet.com/4x4/oil.html
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Old 10-11-2006, 01:01 PM
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Thanks, but i cannot seem to to make clear sense out of the chart. I think i got out of it that if you have a 97 or below:

"some oils which are not recommended:
Mobil 1 SuperSyn 0W-30 SL/SJ/CF A1/B1/A5 9.7 doesn't meet 229.1 nor ACEA A2 or A3
Mobil 1 SuperSyn 5W-30 SL/SJ/CF A1/B1/A5 9.8 doesn't meet 229.1 nor ACEA A2 or A3
Mobil 1 SuperSyn 10W-30 SL/SJ/CF A1/B1/A5 10.1 doesn't meet 229.1 nor ACEA A2 or A3
These 3 oils do not meet MB spec of > 3.5 cP for high temperature high shear strength."

So basically i should change back to dino oil, if i am correct. However it still doesn't state what kind of oil i SHOULD be using. Can anyone help me out a in a little more specific detail?
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Old 10-11-2006, 01:19 PM
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What kind of oil and grade are you using?
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Old 10-11-2006, 01:37 PM
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lukesmith55,

Basically any 229.** oil should be more than edequate for your car.
However, since your car is 1997, it doesn't need synthetic oil because it doesn't have the FSS (flexiblbe service system). Normal dino oil should be good enough.

The grade is in your owner manual due to your climate but I would imagine a 0W-40 or a 10W-40 should do.
Again, I don't think synthetic oil causes the ticking problem

Regards,
JeffreyP
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Old 10-11-2006, 02:36 PM
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Quote:
Originally Posted by lukesmith55 View Post
I got an oil change and switched from regular oil to synthetic.THE TICKING DID NOT START UNTIL I SWITCHED TO SYNTHETIC OIL, LITERALLY A FEW HOURS AFTER.
Who changed your oil and what did they use?
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Old 10-11-2006, 03:35 PM
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it's been my experience that synthetic oil is thinner than mineral so that might account for your tapping noise.easy to find out switch back to 20/50 and see .cheap test.
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  #9  
Old 10-11-2006, 09:51 PM
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My friends mechanic, who does all the oil changes on his two benz's. He used mobil 1 synthetic.
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Old 10-11-2006, 09:53 PM
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Quote:
Originally Posted by david s poole View Post
it's been my experience that synthetic oil is thinner than mineral so that might account for your tapping noise.easy to find out switch back to 20/50 and see .cheap test.

Yeah, i know the oil guides go out, but it literally happened like a few hours after the oil was changed. Do you by chance know what the sound is like when the oil guides go out? Is it a constant tick or one that comes and goes, and gets faster with accelleration.
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  #11  
Old 10-11-2006, 10:25 PM
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also what kind of oil should i use?? 20/50 Mobil non-synthetic??
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Old 10-11-2006, 10:36 PM
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Quote:
Originally Posted by lukesmith55 View Post
also what kind of oil should i use?? 20/50 Mobil non-synthetic??
Try 15W50 or 0W40 mobil 1.

What grade did he put in? You haven't answered this question.
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Old 10-11-2006, 10:47 PM
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I have no idea what grade, all i know is it is mercedes reccommended mobil 1 synthetic
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  #14  
Old 10-11-2006, 11:02 PM
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MBz recommends a Mobil 1 product that meets 229.5 (or 229.51 as needed).
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  #15  
Old 10-12-2006, 10:18 AM
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my son's 300e....1989 was tapping with 20w-50....dino.

i switched to synthetic...15w-40 and its fine... i am going to thin it down to 10w-30 for the three winter months... and see what happens...

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