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What weight oil to use on oil change - 2008 Audi S5 Coupe

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5w-30 unless you leave in a lot hotter climate...the i would recommend 20w-50 valvoline..great oil!

Posted on Sep 29, 2009

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Loosing oil pressure after changing oil and filter. if engine has sludge in it what do you use to clean sludge from engine


Did you use same weight and brand as usual, or did you change to another weight/brand?

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Can you use 5w20 instead of 5w30 engine oil when they reccomend 5w30


Use only the oil weight on the oil cap or owners manual if the cap does not list the oil weight. Most older vehicles called for eather 10w30 or 5w30 depending on the ambient temp. In the past 10 or so years, manufacturers updated engines for better fuel efficiency by tightening tolerances in the engines, thereby needing a lighter oil weight to provide sufficient lubrication for the parts So manufacturers started requiring 5w20 oil in their engines. I work as an Auto Care Technician at Walmart, and we will NOT do an oil change for any weight other than the recommended weight by the manufacturer. If it calls for 5w20, we use 5w20, regardless of what the owner wants. This is to avoid any possible engine oil related problems. People will blame someone else if they have a warranty issue the dealer refuses to honor for whatever reason, and it would go back to the last place the vehicle had the oil changed at. So therefore at Walmart, we follow the manufacturers recommended oil weight for all oil changes.

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My 1999 Saturn sl1 has an oil leakage. will changing the weight of oil help or hurt?


Only the manufacturer's recommended oil weight should ever be used in your engine.

While using a heavier weight oil might reduce the leakage somewhat, (but not much), the benefit will be more than offset by the internal damage that an UN-recommended oil weight may cause to your engine. The engine was built with certain tolerances between the metal parts, and a higher weight (thicker oil viscosity) may not be able to penetrate the spaces, causing premature wear.

In short, don't do it. Repair the leaky seal, or gasket, and only run what Saturn says you should run.

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Had oil changed, synthetic oil was used now I can hear my valves tapping, could they have used the wrong oil weight?


who ever changed your oil may have used the wrong weight, this may be causing the tapping noise

Oct 01, 2010 | 2005 Nissan Maxima

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I have 2003 Honda CR-V with 118 k , changed motor oil , ravenol 5w40 what is the changing interval for oil


First off you are using an incorrect weight oil in your Honda. Your Honda requires 5W20 and not 5W40 which is way too heavy. Change the oil and filter every 5,000 miles and use the correct weight and a quality filter such as Bosch, Purolator, or Wix.

Jul 26, 2010 | 2003 Honda CR-V

3 Answers

What motor oil weight should I be using on my 96 olds 88....we live where the winter temps can go as low as -10 F and as hot as 95F in the summer


5w 30 or 10w 30 during the winter. After an oil change... check your oil after 200-300 miles of use. Is the level the same? If so your weight is fine. If it drops, it's to light of an oil and your engine is now "drinking it" like fuel, move to a heavier weight. As far as Changing between winter and summer. Changing Oil weights is not bad for your motor so if the winter you go with 5w 30 and it works, great, shoot for the same during the summer. If it seems to "drink it" during the summer using this weight, go up to the next (10w 30)

That being said. Changing from natural oil, to synthetic, back to naturual , or vice versa... swapping back and forth between these KINDS of oil has been known to cause damage. so whatever weight you decide on, stick with one "type", natural or synthetic.

Feb 27, 2010 | 1998 Oldsmobile 88

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2009 NOT GETTING THE GAS MILEAGE IT DID WHEN IT WAS NEW, CHANGE AIR FILTER AND HAD IT SERVICED


Most likely, you have had the wrong weight oil installed during your oil changes. The 09s are VERY specific to the exact weight of oil.
Use ONLY what is printed on the oil fill cap.

Jul 13, 2009 | 2009 Toyota Prius

1 Answer

Oil light on toyota previa


have the oil pressure checked ... if you are not using too low a viscositity of oil (the weight) you might be able to use a thicker weight oil to raise the pressure.

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1 Answer

Oil Change


Drain engine oil and replace oil filter(your local automotive store will have a book telling you what oil filter you need to buy). You've probably been using a multi-grade 10-30 or 10-40 weight oil. Or a straight 30 weight oil. Regardless, replace that oil with one grade heavier, single-weight of oil. During warm months, use 40 weight; in the winter (depending on how far the mercury dips in your part of the country) use 20 or 30 weight. Slightly thicker oil won't hurt that worn engine, and if your battery is good, it'll turn over fast.

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1 Answer

1997 c class merc with oil consumption problems


O.K. Let's use 20 weight for example. A straight weight oil is just that, a straight 20 weight in viscosity, it doesn't change when it gets hot or is cold, so it won't thin when heated. It will read
sea 20 on the container. A 20/50 has a viscosity that changes when heated. When cold it is a 50 weight, then as it heats up it thins to a 20 weight. A 20/50 might not be too bad to run in this situation, but the viscosity breakdown is quicker with the mixed viscosity oils, so I generally recommend running a straight weight, such as 15 or 20 in the winter, and a 30 or 40 in the summer. Keep in mind that the oil does not thin, so if you have extreme cold in the winter, the car may not start very easy. If it doesn't, then you can go to a thinner oil. In the summer, if you have extreme heat, you can go with a thicker oil if the engine has a little noise, or running hotter than usual. Just remember, the lower the number, the thinner the oil. Running a thicker oil in yours, should cut down on the oil consumption.

Aug 31, 2008 | 1997 Mercedes-Benz C-Class

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