85 500 SEC - regular gas OK?
12-31-2007, 12:33 PM
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85 500SEC
85 500 SEC - regular gas OK?
The owner of this 500SEC (a US version) said it said in the owners manual to use regular gas. But almost every place I have looked, it seems people recommend premium. Which is it?
12-31-2007, 12:42 PM
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1991 560SEC Teal 1989 420SEL Ice Blue 1984 500SEC White
PREMIUM only.
It is a high performance motor no matter what anyone might say.
You will just kill it early running anything but PREMIUM HIGH TEST.
Fossil fuel oil products also. Not synthetics for oil changes.
Bruce
It is a high performance motor no matter what anyone might say.
You will just kill it early running anything but PREMIUM HIGH TEST.
Fossil fuel oil products also. Not synthetics for oil changes.
Bruce
12-31-2007, 04:35 PM
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Premium yes, but I beg to differ on the lubricant reccomendaiton. I currently use, and have used only synthetic lubricants in my cars, one of which is a 560SEC, and others being even older models. Those that I switched to synthetic after buying used showed a significant improvement in oil pressure, running temperature, fuel economy, valve train noise. Varnish and sludge are no more. Oil analysis has shown a drastic decrease in engine wear.
12-31-2007, 07:57 PM
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2006 E320 CDi, 2008 3/4 Ton Suburban, 2007 "rice rickshaw" Accord 5 speed
Premium yes, but I beg to differ on the lubricant reccomendaiton. I currently use, and have used only synthetic lubricants in my cars, one of which is a 560SEC, and others being even older models. Those that I switched to synthetic after buying used showed a significant improvement in oil pressure, running temperature, fuel economy, valve train noise. Varnish and sludge are no more. Oil analysis has shown a drastic decrease in engine wear.
Happy New Year.
12-31-2007, 09:46 PM
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mercedes 300sd , 380sl , s500 Ford f250 , escort , aspire . volvo 240
I like to use 15-40 swepco mineral oil .very good stuff
01-01-2008, 01:11 PM
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1991 560SEC Teal 1989 420SEL Ice Blue 1984 500SEC White
There you go.
Synthetics work well if you can keep it where it belongs, inside of the block, and not on the outside!
Dino also gives you that every 3k look at things.
Synthetics work well if you can keep it where it belongs, inside of the block, and not on the outside!
Dino also gives you that every 3k look at things.
01-01-2008, 03:44 PM
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[QUOTE=kellerboy;2575405]that is the problem is leaks if you put syn in old cars.
QUOTE]
Not true, I would park any of my cars on the most precious rugs without fear of leaks. Synthetic oil will not create leaks and it offers lubrication and protection dino oil cannot, no matter how often it is changed.
QUOTE]
Not true, I would park any of my cars on the most precious rugs without fear of leaks. Synthetic oil will not create leaks and it offers lubrication and protection dino oil cannot, no matter how often it is changed.
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01-02-2008, 01:00 AM
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'82 300SD, '84 500SEC
Typically the only time you'll see a leak with synthetic that you didn't with dino oil is on an older engine where a non-detergent dino oil was leaving sediment and sludge plugging leaks.
In any car that has had modern oils run in it and been changed regularly, you shouldn't notice leakage with synthetic.
That being said, your mileage may vary!
In any car that has had modern oils run in it and been changed regularly, you shouldn't notice leakage with synthetic.
That being said, your mileage may vary!
