I'm surprised the 2007 is spec'd for 5W30...my 2001 is 5W-20....which is why i made the above post.
ignore my previous post.
ignore my previous post.
I might be losng my mind ,Factory Fill changed out
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No mine is spec'd for 5w20, I just wanted to use up that oil(Mobil 1 5w30)as both my cars are spec'd for 5w20 wt. The only thing I suspect it will bother is the economy and with the warmer months approaching I am not worried about it now.
I have used both 5w30 & 5w20 synthetic (M1 & PP) in a Honda ivtech. The 5w20 gets better mpg by about 2 but no other noticable difference.
No, I do not work for Jippy Lube. We are a full service technical shop. Yes, a higher viscosity oil can offer greater protection. No, that isn't universally true. Some of you might be surprised to find that, after 10w30 bulk oil is delivered to a quick-change place, they drive it right over to your Honda/Toyota dealership and fill them up, too. Almost everyone who has taken their car to have the oil changed has most likely had 10w30 put in it, regardless of spec. No, we don't see the engines developing seal problems. We see customers over and over again. Oil can darken because of additives, but I wasn't specifically referring to darkening, but to dirtying, which cannot be a matter of purely scientific analysis or we would be sending our mechanics out for Ph.D.s. Let me ask you this, if a Honda is a brilliant piece of engineering, why would it fall apart with a slight change in oil weight?? (It doesn't, so Honda owners breathe easy.) Do you see the point, a finicky engine that needs temperamental babying like that would not be finely engineered, but overengineered. There is a difference. Take, in riflery, the AK-47. Almost universally praised for its ability to fire accurately under extreme abuse. Great engineering combines simplicity, functionality and durability. With an automobile, if a car would start to exhibit all kinds of issues from a slight change in oil weight, would it be an example of quality engineering?? I have more faith in Honda than this, though I can be proved wrong. All I am claiming is that I wouldn't think too much of a car that came apart because I changed the oil weight slightly.
accurately? I think not. keep firing, by all means.
Thank you, bar1. I am not trying to pull one over on anybody here. But you do have to recognize that fact that there are many engines, SUBSTANTIALLY UNCHANGED, that only ten years ago recommended 10w30 but now recommend 5w20/30. If there are no major engineering changes, why the viscosity change??? Furthermore, I would not dare claim that "any" oil can be placed in any car, but if you will recall, the issue was over 5w20 vs. 5w30 vs. 10w30.
Patman
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Because oils have changed drastically in the last few years, and you can get the same level of protection with a 5w20 that you used to get with 5w30, but with the added benefit of slightly better MPG, which car makers always love.
rsylvstr, if you have much experience with these rifles, you know what I mean. You're not going to get a 1" MOA at 200, of course, but enough to drop a man at 3. You of all probably know how "well" an M16 holds up to sand, mud, or even a mere lack of cleaning. Compare that with the AK, and be honest. Even the designer of the AR has admitted the quality engineering in the AK. But the AR is far more accurate when clean and pristine.
Oils have changed, and improved, no doubt. But can we agree that an engine, originally designated 10w30, would not be harmed by its reintroduction?
Patman
Staff member
If it was originally designed to run on 10w30, then it obviously would not harm it to continue running that viscosity. However, if you did a series of UOAs on that engine with 10w30 then a bunch with 5w20, you might just find the 5w20 gives you better results, especially in situations where that engine sees a lot of short trips.
First of all
Your observations and beliefs are common. The issue is that most people using their vehicles daily have trips of 20-30 minutes or less. The oil is always to thick when cold. Your observations are valuable but the evidence of the effectiveness of lighter viscosity's reducing wear is hard to dispute.
Here is some recommended reading.
AEHaas writings
Your observations and beliefs are common. The issue is that most people using their vehicles daily have trips of 20-30 minutes or less. The oil is always to thick when cold. Your observations are valuable but the evidence of the effectiveness of lighter viscosity's reducing wear is hard to dispute.
Here is some recommended reading.
AEHaas writings
If you stay here long enough you will find that:
1. The reason that 5W20 is specced for many vehicles in the USA is complicated, and not based solely on CAFE. ie. better for short trips, lower oil temp, less shearing, on and on. Ever try to buy a 5W20 in Australia? If you are going to spec it, you need to roll it out to the retailers. There was a benefit to the US carmakers to spec 5W20 (CAFE) so they did. They might feel it works better than 5W30 in Europe, etc, but why bother? It may reduce wear a bit in some engines, but why go through the trouble?
2. Some cars definately run more efficiently with a thinner oil. Dodge Hemi with MDS for example.
1. The reason that 5W20 is specced for many vehicles in the USA is complicated, and not based solely on CAFE. ie. better for short trips, lower oil temp, less shearing, on and on. Ever try to buy a 5W20 in Australia? If you are going to spec it, you need to roll it out to the retailers. There was a benefit to the US carmakers to spec 5W20 (CAFE) so they did. They might feel it works better than 5W30 in Europe, etc, but why bother? It may reduce wear a bit in some engines, but why go through the trouble?
2. Some cars definately run more efficiently with a thinner oil. Dodge Hemi with MDS for example.
cyclic -- You did just fine - a good thing. Never regret it.
echo2 - I work near O'Hare airport, and have seen many thousands of airplanes. I conclude that they are held aloft by invisible monkeys.
echo2 - I work near O'Hare airport, and have seen many thousands of airplanes. I conclude that they are held aloft by invisible monkeys.
Let's try to recall that this was originally about a guy asking whether putting 5w30 in his engine instead of 5w20 was too much to worry about. My opinion was that it was nothing to worry about at all. Perhaps you could ask the monkeys next time you see them to teach you to read properly and then you could go back and see if anyone has actually refuted what I originally posited or whether this has been diversion upon ancillary (ask your monkeys to look that one up in the dictionary for you) diversion detracting from this very real truth that even you acknowledge: there is not a significant enough difference between the two to cause his engine harm. Or perhaps you could answer this question (remember, ask your monkeys to sound out the words if you are having trouble): What is the difference between 5w30 and 5w20 when the engine is at full operating temperature?? What is the difference between the two when they are being slung about at start-up??? Don't worry, I know the answer, and was trying to allay cyclic's fears so that he wouldn't end up being a guy who worries more about tiny engine oil variances than about his childrens' education or the quality of his marriage. Toodles.
Echo2, I agree that running the 5w30 vs. the 5W-20 for this oil change, or for a car specified for it would be fine. The only heartburn I have over your point is that you used terms such as "fly apart", "come apart", "exhibit all sorts of issues", and need "temperamental babying" if someone used a slightly different viscosity. I think those phrases are significant exaggerations of the conditions and points some were trying to make.
In general, I think *most* agree that *most* of the time, there's not enough difference in a 5W-20 and 5w30 to make a difference in an oil change or two. However, many do believe that over a significant period of time/miles, there can indeed be a difference in engine condition, seals, bearings, etc. How much? Who knows. You're probably not going to notice anything in 1, 2,...10 oil changes? Probably for most people (90% or more?), they would never know the difference because they wouldn't keep the car that long. But for someone (like me) who plans to keep his car for 300K, 400K, 500K miles or more, it could mean the difference in longevity.
Just my two cents.
And BTW:
In general, I think *most* agree that *most* of the time, there's not enough difference in a 5W-20 and 5w30 to make a difference in an oil change or two. However, many do believe that over a significant period of time/miles, there can indeed be a difference in engine condition, seals, bearings, etc. How much? Who knows. You're probably not going to notice anything in 1, 2,...10 oil changes? Probably for most people (90% or more?), they would never know the difference because they wouldn't keep the car that long. But for someone (like me) who plans to keep his car for 300K, 400K, 500K miles or more, it could mean the difference in longevity.
Just my two cents.
And BTW:
Thanks for the remarks guys. Hey don't stress out on each other. LouDawg, we pretty much nave the same taste in cars I see
Quote:
Thanks for the remarks guys. Hey don't stress out on each other. LouDawg, we pretty much nave the same taste in cars I see
Hey, right on! Funny how you went with the V6 on the Tribby and the 4-cylinder on the Accord, and I went just the opposite. I love both of mine...how about you?
Echo2 welcome to Bitog... You speak the truth... Thanks for your input....
Sorry if I came out swinging. I was just offering my position on seeing oil come out of those model cars frequently and it seemed like there were some folks who wanted to pull the six-guns before asking for clarification. I understand that there is significant science involved in oil analysis that your average local tech may not fully comprehend. There is also colloquial evidence that a scientist never sees because he cannot possibly replicate the enormous variety of circumstances present in frequent automobile use. Remember, some scientists somewhere approved DexCool. Ask your local mechanic for his input on that one.
LouDawg, sorry about the heartburn. I still don't know about that Escape purchase, though. The 6 really moves.
All right, cyclic seems more content than the rest of us now.
LouDawg, sorry about the heartburn. I still don't know about that Escape purchase, though. The 6 really moves.
All right, cyclic seems more content than the rest of us now.
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