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#4678619 - 02/26/18 11:07 AM Lexus IS250 - 4 monthly/5000 mile oil only changes
LexusLenny Offline


Registered: 02/26/18
Posts: 6
Loc: UK
Hello from the UK.

Our 2006 Lexus IS250 owned since 2016 is hitting the 100,000-mile mark. At has been looked after loosely on Lexusís annual service recommendation by Lexus. However, we have now decided the car is a keeper for the foreseeable future and I am exploring 5k intervals.

Driving style/stats for the car:
The car will now be used for mainly highway driving covering 15k a year
The car is run on BP 95Ron (standard grade in the UK) along with Archoil 6900PMax at recommended doses most fills, and double dosages following missed fills.
10k services will be carried out my specialist mechanic using Shell Helix AG 5w-30 and a genuine Denso/Toyota Oil Filter (he has a great online reputation therefore his service stamps actually mean something compared to a fastfit or Joe Bloggs backstreert garage).

Given the driving style, is a 4 month/5k interim change required or beneficial?

If an interim 4 month/5000mile change is implemented, would an oil only change suffice? The cost is £30 (DIY with PELA pump and Shell Helix AG 5W30 API SN) vs £65 (Fast Fit Change with Fuchs oil (API SM) and Mann Filter as mentioned above).

Any other tips are most welcome.

Thanks,

LL

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#4678629 - 02/26/18 11:19 AM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 11965
Loc: N.H, U.S.A.
Highway? - I would say 7500 miles services will neatly get you to your 15K a year without over or underchanging the oil.
_________________________
2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter

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#4678630 - 02/26/18 11:19 AM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
BrocLuno Offline


Registered: 09/06/15
Posts: 5513
Loc: Kalifornia Kollective
The State of California Fleet Admin did many tests back in the 1990's to determine most cost effective lube regimen. They concluded that oil at each change and filter every other at 6,000 miles was the way to go.

Since they lifted the 150,000 mile mandatory auction mileage-limit; many, many fleet vehicles have gone well over 200,000. My last light truck went 258,000 before I retired. It was running fine on this schedule and had been beat on mercilessly in 4x4 off road situations for 10's of thousands of miles.

I think you'd be fine to do your proposed service. I'd prolly stretch it out to 7,500 since it's all clean road work. Filter every other is good enough with quality filters. And I know you won't be going off road in desert dust laugh

Filter every is marketing and only needed if you have a dirty engine... If your engine is only lightly varnished and basically clean, nothing much for the filter to do smile


Edited by BrocLuno (02/26/18 11:24 AM)
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4678695 - 02/26/18 12:41 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
Yah-Tah-Hey Offline


Registered: 05/26/14
Posts: 3396
Loc: Columbus,Nebraska
Those are very nice vehicles. I think following the OEM maintenance schedule is the way to go. That OEM oil filter is an excellent choice. I've use that oil filter for years. One member got tired of me mentioning that product so I vowed not to mention that brand for a year. Ten months and two days to go. Go for LL smile

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#4678699 - 02/26/18 12:45 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
PimTac Online   content


Registered: 03/04/17
Posts: 4264
Loc: Soviet State of Washington
Dittos on the 7500 mile recommendation. You should have many more miles with that Lexus. Also, nothing wrong with those Denso filters. Thatís what I have used exclusively for over 25 years now.
_________________________
2017 Mazda CX-5 Grand Touring

Valvoline Advanced Synthetic 0w20
Mobil 1 M108A EP filter


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#4678707 - 02/26/18 12:59 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
CharlieBauer Offline


Registered: 03/29/16
Posts: 1177
Loc: CA
A Lexus in benign UK climate doing 70mph and below highway driving.

7500 on full synthetic is the minimum.

I don't think you need to use Archoil either.

If this is a keeper, then be sure to follow other manufacturer maintenance requirements.

Generally speaking, Toyota and Lexus go hundreds of thousands of miles with minimal maintenance using basic oil.
_________________________
It ain't what you don't know that gets you into trouble. It's what you know for sure that ain't so.

- mistakenly attributed to Mark Twain

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#4678713 - 02/26/18 01:05 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: PimTac]
Yah-Tah-Hey Offline


Registered: 05/26/14
Posts: 3396
Loc: Columbus,Nebraska
Originally Posted By: PimTac
Dittos on the 7500 mile recommendation. You should have many more miles with that Lexus. Also, nothing wrong with those Denso filters. Thatís what I have used exclusively for over 25 years now.
Thanks for mention PT.Can't go wrong with that brand.

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#4678780 - 02/26/18 02:16 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
Gebo Online   content


Registered: 09/18/02
Posts: 2082
Loc: VA
Would probably be fine.

I like keeping my changes at 5K just to make it easier to keep up with by watching odometer. Toyota OEM Oil filter costs me $4.50 so I change it every oil change.
_________________________
'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K


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#4678805 - 02/26/18 02:40 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
Speak2Mountain Offline


Registered: 04/07/17
Posts: 346
Loc: Mississippi
I have one and its nice but...........I'd change oil every 5k bc of fuel dilution. These things run a little rich and have gobs of problems with carbon build up.

Advice:
1) Run the snot of it
2) Try to do as little stop and go as possible
3) Run the lowest NOACK oil you can
4) Run top tier gas or at least PEA product
5) Save $ in your budget to have the piston area cleaned


Edited by Speak2Mountain (02/26/18 02:40 PM)

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#4678863 - 02/26/18 03:28 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
PandaBear Offline


Registered: 08/05/02
Posts: 14212
Loc: Silicon Valley
IS250 owner here. Not sure if the intake carbon deposit issue is the same in UK as in the US, so my recommendation may vary.

The sump has 6.6qt so in theory it should be ok to do 10k OCI if you use synthetic, but because of fuel dilution of DI engine and the intake deposit, I'd not go above 5k OCI (which is what American Lexus recommend) on dino API SM (also what's speced).

I have seen an study by a Korean organization that said they found high engine load, short OCI, and Group IV base oil helps reduce the intake valve deposit. I personally use synthetic with the lowest noack for this car, and am thinking about changing the synthetic at 5k OCI and reuse it in my beater for another 5k.
_________________________
"You keep asking questions PandaBear and you'll end up a vegetarian like my wife" - Camu Mahubah

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#4679052 - 02/26/18 06:44 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
Dyusik Offline


Registered: 09/26/14
Posts: 1981
Loc: US-WA
Clean valves periodically, prevention is nice and all, but still have to clean them.
I had mine for 83k miles now. Low noack does work, mine had issues worthy of tsb 2x later than normal. Fact remains, it had tsb work done.
I use B12 chemtool once in blue moon, the need for fi cleaner shows up when the car has to downshift at 1200 rpm under light load instead of just chugging along.
I am confused about the short oci vs noack argument. Once upon a time someone posted a noack test performed on M1 0w40. The test showed that of the final 8.8% loss, majority happened at the beginning of the test. Still can't rationalize this for my self, why people suggest to shorten oci.
Fuel dilution in mine is easily noticed, according to the dipstick it gains >1qt. So I'm leaning toward a 40wt for a winter fill. But that is with almost no freeway time.
Also the tranny needs love. Mine shows a change in behavior right about 40k mile mark. A complete fluid exchange works, 3x drain and fill was a waste ( 2qt pan, what do ya expect?).
One thing I hate about it is traction control. With it off, it's still on, just not 100%. On pure flat ice (glass smooth) impossible to control the car. With it off completely, it is the most well mannered, balanced car even on the said ice.
_________________________
95 Cherokee 190K DELO 10W30,XG8
07 IS250 97K FB ?w??,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K 76 20w50,1515
14 RX450h 30k PP 0w20,NAPAG

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#4679137 - 02/26/18 07:54 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
BrocLuno Offline


Registered: 09/06/15
Posts: 5513
Loc: Kalifornia Kollective
Is it possible for a 2006 to be a DI engine? I thought they were all port injected ...

If port injected, dis regard all the fuel dilution talk and go 7,500 miles.

If actually DI, then I'm out to lunch, do you 5K intervals ...
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4679172 - 02/26/18 08:26 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
Bullwinkle007 Offline


Registered: 02/12/18
Posts: 141
Loc: California
I prefer to always change my oil between 5 to 6000 miles.

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#4679243 - 02/26/18 09:15 PM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: BrocLuno]
Dyusik Offline


Registered: 09/26/14
Posts: 1981
Loc: US-WA
Originally Posted By: BrocLuno
Is it possible for a 2006 to be a DI engine? I thought they were all port injected ...

If port injected, dis regard all the fuel dilution talk and go 7,500 miles.

If actually DI, then I'm out to lunch, do you 5K intervals ...


4GR is DI only. The 2's that came in the xx350/450h were port/DI combo, best of both worlds. IIRC it uses ports for idle, DI for load, and both for high load.
_________________________
95 Cherokee 190K DELO 10W30,XG8
07 IS250 97K FB ?w??,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K 76 20w50,1515
14 RX450h 30k PP 0w20,NAPAG

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#4680514 - 02/28/18 11:17 AM Re: Lexus IS250 - 4 monthly/5000 mile oil only changes [Re: LexusLenny]
LexusLenny Offline


Registered: 02/26/18
Posts: 6
Loc: UK
Hi,

Many thanks for your replies, great to see many IS250 owners here too, thereís definitely a lot of knowledgeable heads on here. For the last 10 years, I went with whatever the dealer provided(surely they wonít get it wrong! Pah). Prior to that I would buy the recommended Castrol.

Now that I'm supplying the parts for servicing, Iíve just scratched the surface of the oil mind field.
Fully Synthetic must be used (why use anything else today?)
Viscosities Ė most cars run on 5W-30
API specs SN>SM>SL and higher letters are superior? And backwards compatible.

Based on the replies here, I will go for 10k Oil and filter changes at a garage, with 5k interim Oil only vacuum extractions at home. This is in line with Lexus USís recommendation. Do Lexus US expect their cars to do mega mileage, hence the recommendation, or is it purely cultural?

Carbon buildup cases are not unheard of here, cheap supermarket fuel has been identified as the culprit here, most on the LOC UK either use 97Ron+ fuel from either Shell or BP, or standard Shell/BP fuel and/or run Acrhoil/BG products and/or get Carbon Cleaning performed.

Can you guys please recommend which of following API SN Oils would be best (engine longevity) for the IS250.
Shell Helix Ultra Professional AG 5W-30 (£4 per litre)
Gulf Ultrasynth X 0W20 (£7.80 per litre) Ė this would need to return a 2.5%/1mpg (UK) improvement in fuel economy, to financially break even.

Thanks,

LL

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