5k oil change




the oil still was slightly golden making me think it’s too early.
I think 10k is too long.
When I change the oil on my Suburban at 5k, the oil is black.
most cars I’ve had the oil is black at 5k.
Most of my driving is flying down a highway and some local trips.
What are your opinions on the 5k oil change.
the oil still was slightly golden making me think it’s too early.
I think 10k is too long.
When I change the oil on my Suburban at 5k, the oil is black.
most cars I’ve had the oil is black at 5k.
Most of my driving is flying down a highway and some local trips.
What are your opinions on the 5k oil change.




I’ll stick to my 5k oil changes.
mobil1 is cheap at Walmart.
the oil still was slightly golden making me think it’s too early.
I think 10k is too long.
When I change the oil on my Suburban at 5k, the oil is black.
most cars I’ve had the oil is black at 5k.
Most of my driving is flying down a highway and some local trips.
What are your opinions on the 5k oil change.
Here is a chart: https://operatingfluids.mercedes-ben.../engine-oil/en
Last edited by tbirdvet; Jan 29, 2023 at 11:35 AM.
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Walmart for (2) 5QT Mobil 1 0W30 and an OEM MB filter for $18 ill be doing an oil change within the next week or 2 but I am curious about this seafoam technique gonna look into doing this too
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Walmart for (2) 5QT Mobil 1 0W30 and an OEM MB filter for $18 ill be doing an oil change within the next week or 2 but I am curious about this seafoam technique gonna look into doing this too








Being retired and not really having to go anywhere we don’t put many miles on our cars. We did put miles on the e450 wagon 7000 miles that we traded on the s class. Out of state weddings. I try to change all of mine once every year.




Seafoam really degrades oil performance and you do not get all the oil out on an oil change. This results in contaminated (although slightly) new oil that will not protect as well from wear and no benefit.
Do pay attention to oil grade requirement for your car as cars fitted with a GPF will require 229.51.
Cars without GPF can use either 229.5 or 229.51.
whereas getting on an interstate and putting 700 miles on the car per day is considered normal conditions.
If you go over to "I do Cars" just about every week (or 2) he tears down a no-longer serviceable engine and large percent dies due to oil neglect. MB V8s (550 and 560) have a bad habit of scoring cylinder walls under some (unknown) conditions--which renders the engine dead.
Based on this and other oil information I know and understand::
a) I consider MBs 10K OCI to be acceptable only when the car is only used for interstate driving, with no trips of less than 30 minutes.
b) 5K OCIs are a bit too conservative--oil wears out at a quadratic rate as the anti-wear package is depleted and the oil becomes sludgie. An engine with a 10K OCI will have 4× the wear of an engine with a 5K OCI.
c) So, I am using a ~7K OCI for myself and my Wife.
More damage is done to a motor in 5 city minutes when it’s cold than 5 HW hours at 200*. It’s why race cars run slow laps before the flag drops. Baby that motor till it hits 190/200* and it will love you. Once at 200*, the TT are waiting on you!




Seafoam really degrades oil performance and you do not get all the oil out on an oil change. This results in contaminated (although slightly) new oil that will not protect as well from wear and no benefit.
Do pay attention to oil grade requirement for your car as cars fitted with a GPF will require 229.51.
Cars without GPF can use either 229.5 or 229.51.
Remove Dip Stick, Loosen the Filter, Drain 99% of the Oil, Put plug back in loosely, Change Filter and secure, Clean the Dipstick, then open the drain plug again and you will drain some more old oil. If you let it sit about 15 min, you will get the remainder out. Then Tighten the Drain Plug with a new Crush Washer and Fill her up.







