Synthetic or not - PeachParts Mercedes-Benz Forum

ASaltyDog · #1 08-25-2007, 08:07 PM

Quote:

Originally Posted by manny

Let me enlighten you.

The " Gold Cap " oil is an " extended performance " oil, for oilchange intervals of 15 k miles.
Just another way of Exxon pulling a couple more bucks out of your pocket.

Manny, there's actually a big difference between the two. Problem is as you noted is this 15k oil change idea is a bust.

Under no circustances should you drag around oil for 15k miles in an MB. You have GOT to get the dirt out of that motor, and the oil change is the only good way to do it short of dismanteling and physical cleanout.

On big sumps like the 12's and big 8's the oil will hold a good amount of dirt in solution - most of which has bypassed the filter. But it's got to come out of the motor sooner rather than later, IMHO somewhere around 4-5k miles.

Sludge, intake clogs, valve guide clogging, EGR clogging etc ALL have to do with natural dirt and combustion mess in the motor that can't get out.

True, the oil itself is remarkable and will not break down prior to 15k miles. But the dirt it carries around will wreak havoc with your motor, regardless of size, compression etc

Zeus · #2 08-25-2007, 08:45 PM

Quote:

Originally Posted by ASaltyDog

Manny, there's actually a big difference between the two. Problem is as you noted is this 15k oil change idea is a bust.

Under no circustances should you drag around oil for 15k miles in an MB. You have GOT to get the dirt out of that motor, and the oil change is the only good way to do it short of dismanteling and physical cleanout.

On big sumps like the 12's and big 8's the oil will hold a good amount of dirt in solution - most of which has bypassed the filter. But it's got to come out of the motor sooner rather than later, IMHO somewhere around 4-5k miles.

Sludge, intake clogs, valve guide clogging, EGR clogging etc ALL have to do with natural dirt and combustion mess in the motor that can't get out.

True, the oil itself is remarkable and will not break down prior to 15k miles. But the dirt it carries around will wreak havoc with your motor, regardless of size, compression etc

That, sir, is some good thinkin'!

As for brand, there is Mobil 1, weight as recommended by MB. I use Elf brand oil which is also an excellent synthetic.

As for the whole switching from dino to synthetic argument, I went from dino in my 1989 300E to full synthetic without the slightest of problems. I had 198,000 Kms on the clock when I started using synthetic, and it made it to over 333,000 Kms, all original motor. Car still being driven today and I'm guessing it'll do 500,000 without issue.

ccmbduong · #3 08-26-2007, 08:15 AM

If you change oil every 3K then regular oil would do. But if you are lazy like me, then use Mobil 1 and change every 8-10K miles. I've changed my '87 Camry every 3K miles using regular oil and now it has 200K miles without any problem. This engine in very very reliable. I've switched my '96 E320 to Mobil1 3 years ago, no problem.