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#1
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How to check oil level?
What is the proper way to check engine oil level. On my '97 E300, when I pull out the dipstick with the engine running, it shows exactly between the minimum and maximum marks. With the engine off, the level is all the way up to the max level.
In my assumption the reasoning behind this "phenomenon", is that the oil is recirculating throughout the rest of the engine instead of the pan. Is this a correct assumption?
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#dieselFLEET --------------- '97 E300 '99 E300 |
#2
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probably right, but
I would check the oil level the way the manual describes. With a 97, you should still have the manual???
It probably says, check the level 1-2 minutes after turning a completely warm car off. With synthetic oil, there is enough oil film on the engine that the level in the pan may not be accurate until 12 hours following shutdown, so you then may want to check it cold the next morning following shutdown. That is what I have read recently.... alec
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84 300TD - 235k - Farbe "Surfblau" bought at 213k 87 300SDL - 131k - Farbe "PimpGold" bought at 115k 00 Klepper Faltboot Expedition Double |
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#4
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Check it when stone cold in the morning, after sitting all night, before starting the engine. Pull the dipstick & wipe it clean (ignore level). Insert dipstick slowly. Wait 10-15 seconds. Remove dipstick and read level. Any other method may result in overfilling the sump. DO NOT add any oil until the level reaches the MIN mark using the above procedure. The "MAX" mark is just that, the maximum level... the recommended, and optimum, level is between the min & max marks. Some engines will burn quickly off the oil until it gets between the marks and then stay there for a long time (consumption dropping significantly). And don't forget your engine REQUIRES the use of MB-approved synthetic oil, such as Mobil-1 0W-40 or 15W-50. Anything else and the FSS can cause engine damage from delaying the oil change too long.
HTH, |
#5
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Just a note that the model year 1997 was not a "FSS" car. It is not necessary to use synthetic oil. You should service your car according to your manual or your preference.
Terminator 02 C240W 13K 89 300 SEL 163K 83 300TD 190K
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Mike 90 300D 511k 95 C280 133k 14 BMW 528i |
#6
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The latest from MB is to keep the oil level BETWEEN the min. and max. lines and check when warm, a few mins. after engine shut down.
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Paul 1987 300 SDL; 2000 ML; '69 MGB; '68 VW Fastback |
#7
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Ooops, sorry... thought FSS was in use by '97. So you don't *have* to use synthetic but it's highly recommended. And if you are using synthetics, you cannot check the oil level a few minutes after shutdown - period. You must do it when cold. It's not that hard to do it cold! The synthetics cling to interior surfaces for hours when warm, many people have observed a half-quart difference or more between cold and warm measurments...
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#8
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Quote:
-anthony |
#9
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It is MB that says to check the oil when warm, it's not my idea. I would assume that it is because liquids expand when warm. The bottom line; read your manual. PS I agree with you, anthony, about that (approx.) half quart difference.
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Paul 1987 300 SDL; 2000 ML; '69 MGB; '68 VW Fastback Last edited by PaulH; 02-12-2003 at 11:59 PM. |
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