There is a thread by Antman in the Modifications, write-ups, .... sticky that covers the oil change process in detail including all the part numbers for the filter element, drain plug washer, oil, along with the tools needed to do the job. It's well done and a god resource for those wanting to do the job themselves.

Here's my motor at 210k miles on 10k intervals of Mobil1. I don't generally do short trips. Zero sludge.

Explain the 15k (mile, not km) intervals on Range Rovers. All of a sudden it explains so much


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I change every 5k. I'm a Toyota trained tech. I feel the extended LOF interval is heavily driven by EPA concerns over recycling and Dino consumption. Also consumers love to not have to take care of their vehicles because its a hassle. I LOL at people who brag to me about their extended LOF intervals. I haven't seen a vehicle yet that won't be low on oil after running an extended interval. The exception is that one guy who actually tops their oil up (haven't met him yet). VW products are usually out of oil. Do some research on what the OEM considers acceptable oil consumption. Chrysler and VW say 1 quart per 1k miles. Hmmm, in a 4 or 5 quart system that doesnt quite work for a 5k or more interval. How long do you think your paper filter lasts? I cannot cou t the number of filters i have pulled out of the cannister in pieces. Do whatever you think is best, but I tell my customers 5k synthetic LOFs are the way to go.

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What about the time between oil changes, regardless of mileage? Does synthetic oil go bad? What about oil filters? During covid, I’ve only been driving around 1,500 miles/yr. I just changed my oil (Mobil 1, Toyota filter and new Fumoto valve) at the end of June.

Many oil change places say either 3,000mi/3 mo dinosaur oil or 5,000mi/6 mo synthetic oil.

LOL, calling the guys who fix the stuff "knuckleheads". I have real world experience that shows what the engineer develops on paper, in a cubicle does not always work out. Also, what percentage of consumer actually checks their oil? Let me tell you, not a lot. We constantly get customers with " the oil change light" on. Nope, that's the oil pressure light, you idiot and there isn't any oil in the pan. You assume a 0% oil consumption rate or a highly motivated consumer to add oil during the extended oil change interval.

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Oil doesn't "go bad", rather you accumulate moisture and fuel in the sump. This is made worse with short trips. If you drive that little, pull the dipstick and oil cap and looks for any moisture or yellow sludge. If you see that, go for more long drives on the highway. That is the best way to mitigate it.

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Dealer for filter, Costco for 0w-20 synthetic. I'm hitting 5k next week, and already switched to Kirkland oil at 1K.

I have went up to the 10k mark on my 2014 several times over the years. Never had to add a drop and I check it constantly. Most years I do not make it to 10k so I get it changed every year. All oil changes have been completed by the dealer.

$4.19/ea at Olathe Toyota per my order last night.

Always enjoy it when auto mechanics think they know more about the engines they service than the engineers who designed them, did all the calcs, all the product testing, all the revisions, etc, etc.

Oil filter 04152yzza5 - $3.56
Genuine Toyota 0W20 oil 002790wqte01 - $4.61/qt

I get all my parts from Discount Toyota Parts - AutoNation Toyota South Austin but they are local to me so I don't pay for shipping.

I change mine every 500 miles, and at 8k ... zero problems.

Sorry, couldn't resist. For as long as I have been on car forums, this exact conversation has taken place. So far, aside from old Dodge Intrepids, it seems like most people do fine with any reasonable change interval.

That said ... If your going 10k, I totally agree with the previous poster that you should be checking your oil level. You should be checking it regardless ...

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Go watch the car care nut guy on utube. He's a Toyota master mechanic. He recommends no matter what type of oil you use is to change it every 5K miles. He also said the Toyota oil is actually Mobil 1 so use that if you can find it cheaper or on sale. Personally if I mostly drive in hot desert weather, off road in dusty areas I would stick to 5K mile intervals. If on the other hand you mostly drive on road, no towing etc. 10K is probably fine. This is what I would tend to do.

I can really appreciate you wanting to avoid the dealership, and crawling under your rig to do a DIY service is a good policy. I think most off the self oils are a solid 5k interval, but it really comes down to peace of mind. For me 5k is what im comfortable with and it gives me the opportunity to do a good visual inspection of all the components and put a few pumps of grease in the driveshaft. If you want to quiet your engine down try a 5w30, I've been running 0w30 in winter and 5w30 in summer and i really like how the engine feels and sounds. Oil reports are solid!