Oil change on 88 560sl - Mercedes-Benz Forum
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post #1 of 14 (permalink) Old 08-08-2019, 11:42 PM Thread Starter
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Oil change on 88 560sl

I'm changing the oil on my newly purchased 560sl with 53k miles. I don't know what oil the previous owner used and neither does he. Should I send my pilots for testing to find if its synthetic or conventional?
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post #2 of 14 (permalink) Old 08-09-2019, 11:57 AM
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I've got a similar situation with an '86 560SL which we recently bought. But I wouldn't be concerned about what had been used before, just use a quality synthetic going forward. I'll likely use what I put in my Audis; Mobil-1 European 0W-40. By the way, I tend to dislike commenting on "oil threads" but your question was relevant to me. My main concern is getting a drain pan with enough capacity for that engine.
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post #3 of 14 (permalink) Old 08-09-2019, 03:04 PM Thread Starter
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How much oil capacity is in that engine.
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post #4 of 14 (permalink) Old 08-09-2019, 03:29 PM
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There are many oil threads on the forum. Do a search and read up on them. There are many different philosophies for which oil to use. I live in a warm climate, and my car has a 155,000 miles. So I use a heavier weight conventional oil, which has a higher viscosity and does not leak out as readily as synthetic. Oil, IMHO is one of those things where one size does not fit all. More important to keep it between the marks and change it regularly. Also, your engine holds nearly 10 quarts of oil
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post #5 of 14 (permalink) Old 08-09-2019, 04:38 PM
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With filter it holds 8.5 US quarts.

It's in the owners manual. If you don't have one there is a link to the online service manual which contains the 560SL owners manual. It's in the EGv107 Sticky.
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post #6 of 14 (permalink) Old 08-09-2019, 07:58 PM
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With filter it holds 8.5 US quarts.

It's in the owners manual. If you don't have one there is a link to the online service manual which contains the 560SL owners manual. It's in the EGv107 Sticky.
Rowdie, 8.5 Liter nearly 10 quarts.
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post #7 of 14 (permalink) Old 08-10-2019, 04:35 AM
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Rowdie, 8.5 Liter nearly 10 quarts.
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I stated 8.5 quarts not liters. Your math is also off. Go read the manual.
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post #8 of 14 (permalink) Old 08-10-2019, 09:40 AM
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I just put in 9 qt so I don't have a half of a qt lying around

Between Samson and Delilah its 5 gal. 11qt in Samson, 9qt in Delilah.
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post #9 of 14 (permalink) Old 08-10-2019, 10:16 AM
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I had heard that synthetic oil and older cars were not a good mix due to something in the oil that eroded old style seals and gaskets. Is this not so?
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post #10 of 14 (permalink) Old 08-11-2019, 03:18 PM
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I had heard that synthetic oil and older cars were not a good mix due to something in the oil that eroded old style seals and gaskets. Is this not so?
Yes from my experience this is the case. If the owners manual says use synthetic, then I'd use it, but if it were designed to run on Mineral or blended Oil, then that's what I would use. In my engines, I use mineral oil, preferably with a high Zinc content.
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