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10K Mile Oil Change - 1.8L TSI Jetta #5218600 09/21/19 08:08 AM
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SandCastle Offline OP
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Changed the oil early in Dec. 2018 with Castrol Edge 0W-40 and drove 10,000 miles in 9 months. My driving consists of an ordinary mix of short-tripping (between home and gym), commuting (14 miles each way) and highway driving (3 day-long trips). VW recommends a 10K OCI with a VW502 spec oil. I wondered how suitable this interval was for my situation and sent a sample to Blackstone Lab. The results are unremarkable and show that the 10K mile OCI was reasonable - at least for my driving style.

A few observations:
1. The 1.8L engine holds 6.7 quarts of oil, so there is plenty of additive reserve and capacity to hold contaminants in suspension over the full interval. This probably explains why adequate TBN (3.3) remained at the end, and the insoluble contamination was modest (0.8%). However, if my engine held only 4 quarts, I’m not so sure the results would be as good.

2. The viscosity at 100C declined to 10.7 cSt, which is in the middle of the SAE 30 range (9.3-12.5). Per the Castrol spec the viscosity of new Edge 0W-40 oil is 13.2 cSt. Clearly this version of Edge is not as robust to viscosity breakdown as Edge 5W-30, which Castrol claims is “3x stronger than the leading full synthetic against viscosity breakdown”. Nevertheless, SAE 30 is certainly acceptable, and xW-30 oils are marketed which meet the VW502 spec. So, for my ordinary driving the partial loss viscosity is not too concerning.

3. I don’t have a sense for the significance of the iron level at 27 ppm. As the lab commented, iron increases as the drain interval is extended. Is there another oil out there that produces a lower iron level for the same OCI?

15 JETTA SEL.png
Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218605 09/21/19 08:15 AM
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buster Offline
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Quote
Clearly this version of Edge is not as robust to viscosity breakdown as Edge 5W-30, which Castrol claims is “3x stronger than the leading full synthetic against viscosity breakdown”. Nevertheless, SAE 30 is certainly acceptable, and xW-30 oils are marketed which meet the VW502 spec. So, for my ordinary driving the partial loss viscosity is not too concerning.


I agree. You'll find most 0w40's are going to drop into the 30cSt range, especially if there is any fuel dilution. Generally speaking (and I think this oil is no exception), a larger spread has more VII's therefore the percentage viscosity loss will be higher due to more VIIs. The results would likely be the same with M1/Pennzoil 0w40 as well. The oil did have life left in it and there was no sign of any oxidation. I think the wear metals are good.


2019 Frontier Pro 4X - RGT 5w30
2019 Impreza Sport - OE fill
Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: buster] #5218616 09/21/19 08:28 AM
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FordCapriDriver Offline
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Originally Posted by buster
Quote
Clearly this version of Edge is not as robust to viscosity breakdown as Edge 5W-30, which Castrol claims is “3x stronger than the leading full synthetic against viscosity breakdown”. Nevertheless, SAE 30 is certainly acceptable, and xW-30 oils are marketed which meet the VW502 spec. So, for my ordinary driving the partial loss viscosity is not too concerning.


I agree. You'll find most 0w40's are going to drop into the 30cSt range, especially if there is any fuel dilution. Generally speaking (and I think this oil is no exception), a larger spread has more VII's therefore the percentage viscosity loss will be higher due to more VIIs. The results would likely be the same with M1/Pennzoil 0w40 as well. The oil did have life left in it and there was no sign of any oxidation. I think the wear metals are good.


0W-40s are ( usually ) just barely 40 grades, i.e on the very thin end of 40, and usually drop down to a thick 30 even without any fuel dilution happening.


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218637 09/21/19 09:02 AM
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demarpaint Offline
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I'd give Mobil 1 ESP 0W40 a try, if you're so inclined. Two runs would be best doing a UOA on the second run to be certain all of the Castrol is out and the results are more accurate.


God Bless Our Troops

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218646 09/21/19 09:19 AM
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gregk24 Offline
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It looks like the oil did it's job. We have a 2014 Jetta 1.8 TSI and run Castrol 0w40 for 5,000 mile intervals. We both live less than a mile from work and use the car for running errands, so it sees a lot of short tripping.


2012 Honda Accord EX-L K24z3
59,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
51,xxx miles
Castrol Edge 0w40 / OEM filter
Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218652 09/21/19 09:26 AM
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Boomer Offline
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2017 Golf AllTrack...same engine, 1.8 L GDI. I use the same oil (Castrol 0W-40) and change every 5000 miles.


2019 VW Passat 2.0 liter gasoline DI engine, DI, 1,100 miles, Castrol Professional VW 508 0W-20
2017 VW Golf All Track 1.8 liter gas engine DI, 24,500 miles Castrol Professional VW 505 5W-40
Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218666 09/21/19 09:39 AM
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macarose Offline
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I would strongly recommend a 5000 miles interval if you plan on having the vehicle for more than 150,000 miles.

There was a time when most motor oils could easily handle 10,000 mile OCIs on modern engines. .In fact, I wrote a lot of articles about this just a few years ago.

https://www.yahoo.com/news/bp/the-g...-oil-change-works-for-you-134321080.html

A lot of today's engines, especially those that have direct injection or turbo chargers matched to a high compression engine, are incredibly hard on the oil. There are also engine designs that have timing chains which have lubricating issues if an oil is consistently left over a very long period of time.

If you are a highway runner who doesn't rev your vehicle that much, you may be perfectly fine. But even then, if you want to keep this vehicle beyond the 200k mark I would simply invest in a 5,000 mile OCI. If you have a filter designed for longer intervals you could possibly change that every other time you change the oil. But if it were me and I was eliminating another car expenditure until EVs become a viable alternative, I would look at making it a 5,000 mile OCI all the way around.

All the best!

Steve

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218691 09/21/19 10:01 AM
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The 0w-40s do drop the viscosity


2015 F150 2.7
2018 F350 6.2
Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218714 09/21/19 10:23 AM
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SeaJay Offline
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This topic should bring out the "you better change it more frequently than the owner's manual says to do it or you will be very sorry as your engine will not last long" crowd.

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218797 09/21/19 11:57 AM
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toneydoc Offline
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10K mile oil changes with that oil looks good
Spend your time and money on something else besides changing the oil


1994 Jeep 166k NextGen 10w30
2014 Camry 42k Castrol Magnatec 0w20
2018 Jeep Cherokee 6k Pennzoil Platinum 5w30
2014 HD Ultra 51k Mobil1 15w50
Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5218852 09/21/19 01:04 PM
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unless using a real group IV +or V synthetic 5000 or 6 mo is a good interval for your driving habits. fake synthetics as most are with wider spreads REQUIRE more viscosity improvers that break down + todays DI engines are hard on oil. unless you trade often 5000 - 6 month oil changes are cheap insurance. in your area a 10-30 synthetic in summer + 5-30 synthetic in winters may do better. 200 thou on my traded 2001 jetta 1.8 T with about 275 TQ + HP using 10-30 real synthetic redline year around in Pa 10 thou intervals, but only port injected! a good thing in my book until VW brings both to USA as in Europe!

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5219165 09/21/19 07:52 PM
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So here we have a very good UOA on the manufacturer recommended interval and immediately three or four people recommending changing the oil twice as often confused

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5219242 09/21/19 09:17 PM
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BurntMusic Offline
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Quote
The 1.8L engine holds 6.7 quarts of oil


I think you mean 5.7. I hope so at least. It's 5.7 quarts or 5.5 Liters (I like 5.5 liters because it's easier to measure if you buy oil in liters).

Good results though. I'm nearing 10000 miles on my OCI with Valvoline MST 5w40. No issues with burning oil or anything.

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: BurntMusic] #5219372 09/22/19 04:46 AM
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21Rouge Offline
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Originally Posted by BurntMusic
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The 1.8L engine holds 6.7 quarts of oil


I think you mean 5.7. I hope so at least. It's 5.7 quarts or 5.5 Liters (I like 5.5 liters because it's easier to measure if you buy oil in liters).


Its gotta be 5.7 as the sump for the 2.0 L EA888 is 6.0 quarts.

Re: 10K Mile Oil Change - 1.8L TSI Jetta [Re: SandCastle] #5219483 09/22/19 07:52 AM
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TiGeo Offline
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Shocker. 10K OCI shown to be just fine by UOA.


2018 VW Atlas SEL 4Motion 3.6 VR6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 TSI Unitronic St2 IS20 - LiquiMoly 5W40 VW filter
2013 Ford Focus SE HB 2.0 Ti-VCT - MC syn-blend 5W20 MC filter
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