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Old 12-04-2014, 02:00 PM
 
Location: Central Texas
13,720 posts, read 24,632,366 times
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If the owners manual had not said every 6 months, I would have said at least once a year with that amount of mileage. But Toyota wrote it that way for a reason. Follow the manual.
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Old 12-04-2014, 02:14 PM
 
Location: Florida
3,194 posts, read 4,241,911 times
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Quote:
Originally Posted by Parsec View Post
I'm surprised it says to change it every 6 months regardless of mileage. Most cars require it changed every 12 months regardless of mileage. But if the manual says it, then that's what I would do.
I venture to guess it said 6 months/5k miles, whichever comes first.

But doing it every 6 months shouldn't hurt your pocket book. In fact, I'm sure if you get on your local Toyota dealerships mailing list, they'll send you coupons for oil changes at a discount. That way, you're getting it done with a discount and it's kept in a log in case you have warranty left.

For a Corolla, I don't think it's but 5 quarts of oil if not just 4, shouldn't cost too much, maybe $25-30.
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Old 12-04-2014, 02:18 PM
 
3,046 posts, read 2,639,969 times
Reputation: 2122
Use synthetic change twice a year.
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Old 12-04-2014, 02:26 PM
 
Location: Billings, MT
9,004 posts, read 7,093,644 times
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Do you HAVE to?
No!
Should you?
To be perfectly honest, I spent my entire life with a wrench in my hand, and I don't know.
Long ago, I knew a Marine Sergeant who had a 10 year old Buick. He claimed he had never changed the oil, just changed the filter every 3000 miles and added a quart. Was he telling the truth? I really don't know.
However, I do know that I have had several vehicles that did not get the oil changed even once a year. One of them had a diesel engine, and it had 276,000 miles on it when I gave it away. It was still going strong. Of course, none of those vehicles had any warranty left. If there is a warranty, follow the instructions to the letter.
Sorry I can't answer your question. It is your vehicle, and your decision.
Good luck.
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Old 12-04-2014, 02:42 PM
 
8,867 posts, read 7,350,424 times
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I'm old school and change my oil every 3 months. Old way was 3 months or 3,000 miles, whichever comes first. I reach 3 months before I reach 3,000 miles. I set up email calender reminders when it's due. If I miss it by a few weeks or month, I don't sweat it. I also rotate my tires every other oil change. I live in hot & humid south Louisiana. Oil change isn't a big deal. Different types of oil breaks down in viscosity at different rates. Loss of viscosity is loss of lubrication. That break down in oil can leave deposits within the engine. Changing the oil on a set schedule and using a higher grade type/brand oil will help to prevent those deposits, ensure good lubrication, and extend the life of the engine.
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Old 12-04-2014, 02:45 PM
 
8,867 posts, read 7,350,424 times
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What if I never changed the oil in my car? - HowStuffWorks
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Old 12-04-2014, 02:49 PM
 
8,867 posts, read 7,350,424 times
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Saturn Rental Car Never Gets Oil Change, Engine Carnage Ensues After 30,000 Miles
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Old 12-04-2014, 04:53 PM
 
Location: Kirkland, WA (Metro Seattle)
3,436 posts, read 2,823,251 times
Reputation: 5903
Quote:
Originally Posted by Redraven View Post
Do you HAVE to?
No!
Should you?
To be perfectly honest, I spent my entire life with a wrench in my hand, and I don't know.
Long ago, I knew a Marine Sergeant who had a 10 year old Buick. He claimed he had never changed the oil, just changed the filter every 3000 miles and added a quart. Was he telling the truth? I really don't know.
However, I do know that I have had several vehicles that did not get the oil changed even once a year. One of them had a diesel engine, and it had 276,000 miles on it when I gave it away. It was still going strong. Of course, none of those vehicles had any warranty left. If there is a warranty, follow the instructions to the letter.
Sorry I can't answer your question. It is your vehicle, and your decision.
Good luck.
I've heard the story of guys who never changed the oil. One, to be exact. And it was second hand when I heard it, thus has moved to legend status by the time I'm reposting it decades later. This was an early-1980s JPN something car.

Personally, I'd believe it happened. But that's because, like you, I've never...not once... seen a street car engine failure ((directly attributable to oil-lubrication failure)). Now, you're a guy who works on engines and I'm just a garage weekend mechanic...or more properly, "used to be". What I have seen in destroyed engines, car and motorcycle:

Loss of oil pressure? Yep.
Loss of coolant? Yep.
Thrown rod? Yep.

Not the same thing...the first was starvation, second heat-death, and third bad metallurgy right from the manufacturer. In fact, Porsche just recalled c. 780 2014 GT3s...and replaced every last engine, in-toto...because two (2) burned to the ground after catching fire due to blown engines. Turned out to be a bad rod-bolt, "I think".

Not to be confused with oil failure, though: Doesn't mean it "can't" happen, and "hasn't", but that's the thing. Who knows?

When I RACED motorcycles and was part of teams tearing engines down to the transmission, we had an entirely different perspective! As for cars: guys in Top Fuel, F1, and similar? Man, they're on an entirely different continuum than us schlubs in passenger cars.

What I consider "high performance" in a car is 100hp per liter of engine displacement. Modern motorcycles can make 150hp/liter easily, usually on 1.0 liter or less displacement engines. F1 cars are putting out what, 200-300hp per liter? New Porsche 991 Turbo S puts about 560hp to ground from a 3.6 (or 3.8) liter twin turbo engine with 1.0 bar boost, 1.2 bar (17psi) on overboost, and warrantying it(!). That tells you a LOT about how far materials tech has come past 20-30 years. I remember when I was a kid, 14psi boost on a stock engine was asking for it to self-destruct in a cloud of piston rings and crank bearings. Not any more.

The fluids they use, though, are also an evolving tech.

Thus, today I use what would sound to some a rather-exotic synthetic oil (Motul) in my Porsche 996 Turbo. Because, as mentioned in an earlier thread, the guys who tear them down to the transmission recommend it...no better or worse reason.
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Old 12-04-2014, 05:26 PM
gg
 
Location: Pittsburgh
16,969 posts, read 17,200,007 times
Reputation: 10806
Quote:
Originally Posted by juliatenn View Post
I have 09 Toyota Corolla, in the manual it says to change oil every 5k miles or 6 months. I barely drive, so I might only do 2k miles every 6 months. Do I have to change the oil that often, or is it not as necessary? And if I change the oil once a year, would it be bad?
Total BS. You do not have to change the oil every 6 months. Do it at the 5K.
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Old 12-04-2014, 05:41 PM
 
1,213 posts, read 1,356,276 times
Reputation: 1573
You could change the oil at 6 months and rebottle your old oil and sell it on Craig's List as "low mileage oil." Only 2k on it. Someone would buy it.

You could do like Red Green and change the oil and put back in the oil you took out last time. Just gave it a breather.

I would not change it at 6 months. Have let vehicles go much, much longer than that with no engine problems whatsoever. Have seen tractors go a very long time without oil changes. Had a neighbor in his 90's and changing the oil was not the secret to his long life. He had not changed the oil in his tractors for years. He changed the oil once in his car in a period of about 7 years. He finally changed his air filter and his gas mileage went way up.
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