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The 2.4 cyl engine has had a somewhat rocky reliability history since 2002 depending on the country of manufacture and vehicule application.
In this generation of rav4s these engines have been plagued with high to very high oil consumption issues. The problem has been found to be a design issue where piston rings are too loose in their clearance and some PCV crankcase ventilation problems. In many countries Toyota has given extra warranties , but only after class action lawsuits, both of which they don't publicize. As a whole Toyota has adopted a " deny till we die " attitude about this problem so we will focus on remedies. Toyota recommends 5w20 grade motor oil to get supposed fuel economy but it is too thin for this engine and in a lot of cases will simply burn it much faster . When we bought ours i rapidly switched it to 5W30 after 20 thousand miles because of higher than average oil consumption. Initially i thought it might go away after a certain "break in" period but it did'nt. Since then it has run only on 5W30 with no problems whatsoever and has even made this somewhat noisy engine quieter. Ours now has 150 thousand miles and averages a quart or less to be added between oil changes.
***Oil change schedule: disregard the original recommendation and do them faster or sooner. Stick to a 3000 mile schedule. Many of you may have noticed that the oil in these engines gets darker faster , another reason to change it more often. This is the result of the piston ring problems and weak internal ventilation crankcase breathing. In regards to this some oil consumption may be the result of a clogged or defective PVC valve. Clean it or change it and monitor oil consumption. Do NOT switch to a synthetic motor oil if you have consumption issues , this or any other engine that "burns"oil will only burn or take more oil as the slipperier synthetic gets past the piston rings easier.
 

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Jeff, it is the 2.4L 2AZ-FE engine that has the oil consumption problem. Starting in the 2009 model year, Toyota changed to the 2.5L 2AR-FE and continue to use that engine to this day. The 2.5L is a completely new design having VVT-i on both intake and exhaust valves. The 2.4L 2AZ was only used from 2004-2008 in the RAV4. Here is an excellent overview of the newer 2.5L 2AR:

https://www.rav4world.com/d1/attachments/pdf/2AR-FE.pdf
 

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Good. I tend to see older vehicules in the shop as newer ones tend to go to dealers more often , but i did notice that upwards of 2010 there were less problems , but still some issues remaining depending on country of engine manufacture. Thanks for the link
 

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The 2.4 cyl engine has had a somewhat rocky reliability history since 2002 depending on the country of manufacture and vehicule application.
Does it make a difference that my 2008 Rav4 (2.4l) was produced in Japan? It burns some oil, but is limited to only 1 qt every 2500 mi. I've never been clear about how many cars this affects. Is it all Toyotas with the 2.4 or jsut some of them. Thanks.
 

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In 2008 they were all produced in Japan. The Camry with that engine has the same problems.
 

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It's also worth noting that (as I understand things) the 2.4L 2AZ-FE engine with the oil burning problem was used in the 2004 and 2005 model year RAV4s but those years DID NOT have the oil burning problem.

It was only in the 2006-2008 model year RAV4s that the 2.4L 2AZ-FE was known to sometimes be a real oil burner.

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I just bought a 2008 RAV4, with 75k miles on it. Wish I had known this before I bought it!

It now has 80k miles on it. All spark plugs (original) look textbook perfect. No signs of oil consumption. I just changed the oil, and I put in 0W-20. So you're recommending 5W-30 instead? Why would we want a more viscus oil? Wouldn't a lighter oil be better be less likely to leave deposits on the oil rings? In any case, I would think we should use an oil with very high detergent content--or even add some flush or do a flush before each oil change.

Has anyone found a workaround for this problem? Or is it best to sell the car now?

Can the newer 2.5L engine be swapped into this vehicle?

Thanks!
 

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I just bought a 2008 RAV4, with 75k miles on it. Wish I had known this before I bought it!

It now has 80k miles on it. All spark plugs (original) look textbook perfect. No signs of oil consumption. I just changed the oil, and I put in 0W-20. So you're recommending 5W-30 instead? Why would we want a more viscus oil? Wouldn't a lighter oil be better be less likely to leave deposits on the oil rings? In any case, I would think we should use an oil with very high detergent content--or even add some flush or do a flush before each oil change.

Has anyone found a workaround for this problem? Or is it best to sell the car now?

Can the newer 2.5L engine be swapped into this vehicle?

Thanks!
I have a 2011 2.5L which started using a quart at 2,700 miles and switched to 5W30 from the recommended 5W20, after which it didn't use a quart until 4,200 miles. It has 109,000 miles and I was shocked that the mileage increased by that much just changing the oil viscosity.
 

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I have a 2011 2.5L which started using a quart at 2,700 miles and switched to 5W30 from the recommended 5W20, after which it didn't use a quart until 4,200 miles. It has 109,000 miles and I was shocked that the mileage increased by that much just changing the oil viscosity.
That makes sense. A lighter oil is going to get past the rings more so than a heavier oil.

But in this case, the oil rings and holes in the pistons are plugging up. Early in the process, before the rings and holes are fully plugged up, shouldn't we want a lighter oil to flow through them and wash away any sludge before it accumulates? Or is a lighter oil more likely to form sludge than a heaver oil?

Late in the process, when the rings are already plugged up, I can see using a heavier weight oil to slow down oil consumption, but that won't help clean out the rings at that point.

In either case, detergent additives WILL help. So my thinking is to use oil with high levels of detergent that flows easily to keep the oil rings as clean as possible.

Your thoughts?
 

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2006 Rav4 4WD, noticed significant oil consumption starting at 135K mileage in 2019, about 3 Qts every 3000 miles, situation getting even worse in 2020, only 140K so far, eat up 1 qt of oil every 800 or less miles. can't find any auto shop in SW Kansas willing to rebuild the 2.4l 2AZ-FE engine. receive a quote from local shop of $3,500 for an used 2AZ-FE engine replacement. 5 year unlimited mileage warranty. Another 2AZ-FE oil burner engine? is it worth it? Can the newer 2.5L engine be swapped into this vehicle?
 

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At the age of your Rav4, maybe you should consider trading it in on a different newer vehicle. I don't think the newer engine can be put in, either way it's expensive to repair, or replace the engine.
I had the same problem with my 08 Rav4 but was lucky enough to have the dealership repair my engine at no charge. Day and night difference afterwards....Good luck
 

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2006 Rav4 4WD, noticed significant oil consumption starting at 135K mileage in 2019, about 3 Qts every 3000 miles, situation getting even worse in 2020, only 140K so far, eat up 1 qt of oil every 800 or less miles. can't find any auto shop in SW Kansas willing to rebuild the 2.4l 2AZ-FE engine. receive a quote from local shop of $3,500 for an used 2AZ-FE engine replacement. 5 year unlimited mileage warranty. Another 2AZ-FE oil burner engine? is it worth it? Can the newer 2.5L engine be swapped into this vehicle?
No, you can't swap it with a 2.5L engine.
You can buy an imported 2.4L engine from Japan. In Japan, engines are required to be rebuilt after every 20,000 miles (don't quote me on the exact figure). The 2.4L engines from Japan never had the defective piston rings. A used, imported 2.4L engine costs about $1,500.
 

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I agree with Kevcules46 that you should consider trading it. You are lucky you can sell it without fixing it. By selling you just put back $3500 back in your pocket to spend for a newer and lower mileage car.
 

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No, you can't swap it with a 2.5L engine.
You can buy an imported 2.4L engine from Japan. In Japan, engines are required to be rebuilt after every 20,000 miles (don't quote me on the exact figure). The 2.4L engines from Japan never had the defective piston rings. A used, imported 2.4L engine costs about $1,500.
Good information, will do some research on it, thanks
 

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I agree with Kevcules46 that you should consider trading it. You are lucky you can sell it without fixing it. By selling you just put back $3500 back in your pocket to spend for a newer and lower mileage car.
No doubt, That’s a reasonable good suggestion, but this car has followed us since 2006, kids don’t wanna let it go, that’s why I’m thinking about put some dollar into.
 

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No doubt, That’s a reasonable good suggestion, but this car has followed us since 2006, kids don’t wanna let it go, that’s why I’m thinking about put some dollar into.
Yes I use to think that way but after sinking thousands into one of my car I learned that sometimes it is not worth it. Cars tend to require more repairs as it gets older and sometimes you can spend more in one year than what the car is worth. Also older cars tend to get more rusty as it gets older. This may not apply if you live in a snow free area. We get too attached to our cars and especially men. Just shop around and see what is out there. In my area I see Lexus RX350 are a better buy than a RAV4. Yes those expensive higher end SUV are actually dropping faster than a RAV4.
 
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