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Synthetic motor oil

8536 messages,  Last post on Nov 21, 2009 at 9:34 AM

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What is this discussion about? Oil


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#7685 of 8536
Re: what is this... [hangaralf1] by ruking1
Dec 31, 2007 (10:17 am)
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Replying to: hangaralf1 (Dec 30, 2007 8:59 pm)

..."about changing to synthetic after 3 oil changes? i have a 06 civic and an 07 odyssey - both of which i changed to synthetic right after the 5000 mile break-in period with "break-in" oil from the factory.did i do something wrong? what kind of damage might i have done?btw - it was royal purple for the civic (now at 30k) and castrol syntec for the odyssey (now at 15k)?is 5w20 what i should be using? (recommended for both) (I CHANGE OIL AT 5K no matter what)what brand of synthetic oil is best for these cars?(WE ARE THE SPANISH INQUISITION!!!) "...
 
Except for changing the OEM conventional, so called "break in oil", 5,000 miles TOO early, the answer is NO! I also take it the Royal Purple is 0w,5w20 for the Civic is Honda/Ford specified oil.
#7686 of 8536
yellow stuff underneath top of dipstick by chetj
Jan 01, 2008 (6:47 pm)
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my buddy has it on his cavalier after 8k on oil...what is it?
#7687 of 8536
Re: yellow stuff underneath top of dipstick [chetj] by highmiler650
Jan 02, 2008 (9:13 am)
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Replying to: chetj (Jan 01, 2008 6:47 pm)

This time of the year I would guess it is a foamy deposit (oil and water), caused by insufficient operating temperature of the engine. Unless the car is driven at least 20 miles under normal operating temperature you can expect water condensation in that area.
 
In winter especially, change the oil sooner, according to the instructions in your manual for severe driving conditions.
 
Consider using synthetic oil and make sure your car is driven at highways speeds for at least 30 minutes every week.
#7688 of 8536
Re: yellow stuff underneath top of dipstick [chetj] by chetj
Jan 02, 2008 (11:31 am)
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Replying to: chetj (Jan 01, 2008 6:47 pm)

actually i bought some wal mart synthetic for him and made him change the oil 8,000 miles ago...i used to own car and i dont want to see engine damaged because he doesnt care about oil changes..car has 167 k on it...i just bought some clean 5000 for him...we will change this month...thanks very much for your helpful advice
#7689 of 8536
Re: Best Place to Change Oil [shipo] by dchen2003
Jan 02, 2008 (4:06 pm)
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Replying to: shipo (Dec 28, 2007 1:48 pm)

Shipo,
 
I read your common on message 6266 about the low mileage on a VW, I have very simular driving condition about my camry except it is not a turbo. You mentioned need to bring the car to exercise at least once a week, does that also apply to 90F in summer and average above 40 in winter of Alabama weather? My commute to the campus is 100% city stop and go city driving and less than 2 miles, just barely enough to bring the car to normal operating temperature. I just changed my oil to M1 5w-30 which is recommand by Toyota, do I also need to bring my puppy out exercising all year round, and how do I make sure there is no water in my oil? Is it possible to know this just by looking at the exhaust (smoke due to water vapor)? If the answer is yes, can your describe how to do the exercise, is interstate the only way or just drive long enough when there is no smoke coming out from the exhaust? I will change the oil once a year since I drive less than 10000 miles a year,is it a good idea.
 
Thank you in advance for suggestions
#7690 of 8536
Re: Best Place to Change Oil [dchen2003] by shipo
Jan 02, 2008 (8:49 pm)
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Replying to: dchen2003 (Jan 02, 2008 4:06 pm)

My concerns about your driving regimen is that unless you overtly take your car on the road for at least five miles in the summer and more like eight to ten miles in the winter (preferably more), you will accumulate so much water in your oil that even Mobil 1 will start forming acids well before the 1 year mark.
 
As for how to tell if the water has boiled off, there is no indicator per-se (unless your car has an oil temperature gauge, something that very few cars have these days), so it's more of a time/distance guesstimate thing. FWIW, just because the engine is "up to normal operating temperature" doesn't mean that your oil is. Your coolant temperature gauge can easily be showing normal while your oil is barely above 100 degrees.
 
Were I in your shoes, every weekend I'd do at least one ten mile drive so that you effectively purge your oil of water weekly.
 
Best Regards,
Shipo
#7691 of 8536
gas mpg in winter by chetj
Jan 04, 2008 (3:01 pm)
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i think the oil companies add something to gas in winter that seems to hurt our mileage...i live in new england...am i right?
#7692 of 8536
Re: gas mpg in winter [chetj] by ruking1
Jan 04, 2008 (3:25 pm)
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Replying to: chetj (Jan 04, 2008 3:01 pm)

That is absolutely correct. You might want to look to your states' regulations. CA for example is a (10) % of ethanol: which is (surprise) more costly This of course causes fuel mileage to fall, in addition to the more consumptive nature of operating in winter conditions ANYWAY!!!
#7693 of 8536
Re: gas mpg in winter [chetj] by shipo
Jan 04, 2008 (7:20 pm)
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Replying to: chetj (Jan 04, 2008 3:01 pm)

Well, yes and no. In many areas of the country the oil companies are required by law to oxygenate their fuels for the winter months, especially in urban areas. That said, some time during the 2006-2007 winter the new EPA regulations for the metropolitan areas of New England (i.e. Hartford, Boston, and Portland) and the surrounding counties were required to convert from good old gasoline to gasoline with a 10% ethanol mix (often referred to E10).
 
The good news (errr, sort of) is that we get the same fuel here year-round. The bad news is that E10 is generally considered to reduce fuel economy from three to five percent. Keep in mind that due to the temperature of the intake charge in the winter time, fuel doesn't atomize as well and your mileage will suffer as a result. Said another way, here in New England, we get a double whammy in the winter time with both cold air and E10 fuel.
#7694 of 8536
Re: gas mpg in winter [shipo] by ruking1
Jan 04, 2008 (7:49 pm)
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Replying to: shipo (Jan 04, 2008 7:20 pm)

Yes, one of the reasons why your states' regulations are important for example is I had read in passing that in the USA, there are a at least 29 separate blends of RUG !!! And we wonder why RUG costs so much!?

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