daryll40

Just curious....I've heard mixed stuff...are there ANY model year LS460 cars (2007-2015) where the oil change interval is 10,000 miles? As 2009 car gets old and is out of warranty, I'd be comfortable stretching the oil change, with synthetic, to 10,000 if I can find any precedent that these engines are OK with that. It seems that much of the oil change interval thinking is arbitrary and at the whim of whatever the corporate legal eagles and bean counters think for the moment. We had a 2010 Corolla that requires 5000 mile oil changes but eventually got a notice that 10K was OK with synthetic.

What's the bottom line here for our LS460s?

CRowe14

If im not mistaken, Roadfrog is awaiting oil results from Blackstone and he should be obtaining them any day now...
I believe the oil he sent in had been used for nearly 7k miles, but im sure he will chime in.

SW17LS

The maintenance schedule for my new 2015 LS460 specifies a 10k oil change interval with 0W20 Synthetic. Same as my 2013 GS350 did.

Lavrishevo

iTrader: (1)

I would monitor the oil condition. If the oil is black with carbon then change it sooner then later. Personally, 7500 on full synthetic all I like to do considering the filter as well.

Devh

If the oil is black it doesn't mean anything else other then oil doing it's job.
Looking at oil and determining it's condition is akin to sorcery and Voodoo.
Trust the engineers and used oil analysis, science not hearsay. Extended oil changes with the recommended oil can make engines last longer then frequent oil changes.

SW17LS

Lexus says 10k, I'm changing it at 10k lol

daryll40

But that isn't my issue. My issue is that many of us have older versions of the same car/same engine, with older requirements to change oil at 5000 miles. Do we have a reasonable argument that because they now have determined that the same engine can go 10K between changes, we can extrapolate that back that to our older cars with older 5K requirements? As has been the case with some other Toyota/Lexus products?

SW17LS

Personally I'd still change yours at 5k.

Lavrishevo

iTrader: (1)

Oil analysis does not account for carbon build up and how dirty oil will leave deposits in the engine. The ability of the oil to lubricate may not be comprised at 10k miles but the amount of dirt flowing through the engine sure is. So is the oil filter. My engine stays cleaner at the intervals I am using and I am using the 15k mobile one extended performance oil. Also, others have already done the Blackstone in the 430 forum and beyond about 7500 miles was not ideal.

Doublebase

There's a poster on here who has contacted Lexus about extending oil change intervals out to 10k miles like a lot of Toyota's products, and they responded that you could. He even posted the email from Lexus on here.

Personally I'm not a fan of a 10k mile oil change, so I go 7,500 on synthetic. I realize it may be fine to go 10k, especially with a bigger sump that holds 9 quarts of oil, but I guess I'm old fashioned. Even 7,500 is stretching it for me. I just did an oil change a few weeks ago using Mobil 1 extended performance (which is supposedly good for 15k miles), but I'm still going to change it at 7,500.

Devh

An oil analysis does not account for carbon build up simply because it's big enough to get trapped by the oil filter so it's not an issue . A high quality synthetic oil with modern filter media will trap those contaminants efficiently and have plenty of room to spare well before it reaches it's bypass.

Using a high quality synthetic oil not only has a additive protective quality during the extended oil interval, it also has a cleaning ability that will remove varnish and carbon formation and suspend it in the oil. Deposit formation is not is not a feature of extended oil intervals using the correct synthetic oil. The only exceptions to this is defective engine designed like the older Toyota engines that were notorious for sludge formation.
The Mobil extended oil would not be a good oil to use simply because of the high mg that Toyota oil avoids in their formulations probably because of it's corrosive nature on some of the internals.
If the oil in the 430 doesn't hold up to extended drains then that is not the fault of the oil, it's the limitation of the engine design.

I have done some crazy extended drains before and when I removed or peered into valve covers on some of them, they were spotless. One car in particular that had 90k on the motor which was also driven hard and to my amazement I removed the oil pan to find main seals without any deposit formation.

tbilisi79

They'll tell you 20 k is also fine if that means the car craps out sooner so you could lease a new vehicle from them.

More engine parts than ever in these cars, this no Chevy 350.
I change oil every 5 k miles .

SW17LS

Thats absurd. Do you think Lexus, a company that hugely values their reputation for reliability and dependability, would recommend oil change intervals that will shorten the life of the car?

Fact is...technology moves forward. Modern engines are easier on oil, modern oils are better, hence...longer change intervals are possible.

Devh

Excellent post and if I might add that three thousand mile oil changes was the old normal not to long ago and if you did 5k oil changes people looked at you like you killed your cat. It has no science to back it up except for the fact that it was a carry over from the days of lead contamination in the oil from leaded fuel. The lubricant industry capitalized on that figure to sell oil.
There have been so many accepted advancements that are not questioned but when it comes to engine oil where a great deal of science advancement has taken place there are still some old habits that are routed in fear of the unknown.

roadfrog

Black oil means nothing. All that says is that the oil is doing it's job. Remaining additives through oil analysis is what deems whether extended oil changes are OK. In Europe, extended OCI's are the norm, especially with synthetics. Check the oil on a diesel after 500 miles and see if the oil doesn't look black.

I expect my Blackstone analysis any day now.

Thank goodness for that.