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View Poll Results: How often do you cahnge your synth oil?
1-3k 1 0.60%
3k every time 84 50.60%
5k 58 34.94%
5-10k 23 13.86%
Voters: 166. You may not vote on this poll

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Old 09-08-2003, 06:20 PM   #26
Wheeldog
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I use Amsoil XL-7500 5W30, and change it every 3750-4000 miles. It always looks pretty good (light-colored) even at 4k miles, and I'm pretty sure I could get away with a longer interval. I think 3k or less is really overkill for a daily driver and with a good quality full synthetic.
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Old 09-08-2003, 06:59 PM   #27
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Quote:
Originally posted by kenshiro
I change every 3K and by that time the oil is always very black and gross.
Oil turns black by being run through the engine. You should have black oil almost all the time as that is the way it reacts to the heat and use.

The Subaru manual for changing oil says every 7500 miles and that is for the dyno stuff. Synthetic should last much longer!

An example of this is a friends corvette. It runs about 13 flat in the 1/4 and has an indicator to tell you when to change your oil. His synthetic lasts about 20,000 miles between changes. He was a little uncomfortable going that long and talked to the service department about it. Their response, "that's about normal for all of our vettes".

The oil companies have spent a fortune trying to scare people into changing their oil every 3,000 miles. It just isn't necessary for the overwhelming majority of cars.
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Old 09-08-2003, 07:05 PM   #28
D-I-Z-Z-L-E
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Quote:
Originally posted by HerculesPeanut


Oil turns black by being run through the engine. You should have black oil almost all the time as that is the way it reacts to the heat and use.

The Subaru manual for changing oil says every 7500 miles and that is for the dyno stuff. Synthetic should last much longer!

An example of this is a friends corvette. It runs about 13 flat in the 1/4 and has an indicator to tell you when to change your oil. His synthetic lasts about 20,000 miles between changes. He was a little uncomfortable going that long and talked to the service department about it. Their response, "that's about normal for all of our vettes".

The oil companies have spent a fortune trying to scare people into changing their oil every 3,000 miles. It just isn't necessary for the overwhelming majority of cars.


i dont buy it. if my car can burn up or loose 1 qt of oil every 2-2.5k miles i sure as hell am not going to keep that crap in my car for 7.5 or more k miles. 1) because there wont be any left so i might as well enver change oil beacause by then i would have poured in 3+qts of oil. 2) because the oil might be ok but there are also pieces of carbon and other crap in the oil that the filter doesnt pick up.
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Old 09-08-2003, 07:19 PM   #29
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Quote:
Originally posted by D-I-Z-Z-L-E

i dont buy it. if my car can burn up or loose 1 qt of oil every 2-2.5k miles i sure as hell am not going to keep that crap in my car for 7.5 or more k miles. 1) because there wont be any left so i might as well enver change oil beacause by then i would have poured in 3+qts of oil. 2) because the oil might be ok but there are also pieces of carbon and other crap in the oil that the filter doesnt pick up.
First, if you are burning that much oil then there is something very wrong with your car. This is no longer an issue of how long does the oil last, it is an issue of how much longer will your car last.

Second, why not just add a quart when it gets low and you will keep a supply of fresh clean oil coming into your car negating the need to change it?
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Old 09-08-2003, 07:23 PM   #30
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Quote:
Originally posted by HerculesPeanut


First, if you are burning that much oil then there is something very wrong with your car. This is no longer an issue of how long does the oil last, it is an issue of how much longer will your car last.

Second, why not just add a quart when it gets low and you will keep a supply of fresh clean oil coming into your car negating the need to change it?

well according to subaru 1-1.5 quart loss is normal for the wrx. as for any other car manufacturer. and i can add oil but i dont want it all mixing in with the gunk and stuff. so i will be safe and change my oil every 3k. just like i have done. if my oil wasnt being consumed i might go for 5k
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Old 09-08-2003, 07:29 PM   #31
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How are you measuring oil consumption?
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Old 09-08-2003, 07:40 PM   #32
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Quote:
Originally posted by driggity
How are you measuring oil consumption?
well i check the dipstick its almost all teh way down. i fill it up about a quart. and its full. thats how i do it
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Old 09-08-2003, 07:51 PM   #33
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Are you checking when the engine is cold? If I remember correctly the owners manual says to check when the engine is warm and there is a very noticeable difference in the warm vs cold level if you check with the dipstick.
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Old 09-08-2003, 07:53 PM   #34
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Quote:
Originally posted by driggity
Are you checking when the engine is cold? If I remember correctly the owners manual says to check when the engine is warm and there is a very noticeable difference in the warm vs cold level if you check with the dipstick.
cold. but i go off of when i put the oil in . let the car cool off and its cold. i check it and its full. tehn i let it cool off later on down the line when its cold and its almost all the way down. like on the tip of the dipstick
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Old 09-09-2003, 08:49 AM   #35
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I change every 5k with Mobil 0W/40.
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Old 09-09-2003, 09:17 AM   #36
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I change every 3,000 miles with Mobil1. I use 10w/30 in the summer and 5w/30 in the winter. The oil still looks good when I take it out of the car and I don't lose any oil. The oil would very likely be good for more than 5,000 miles but for the minor cost, it is a good investment. It also give you an excuse to look under the car more often.

edit for spelling

Last edited by Rich10; 09-09-2003 at 10:27 PM.
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Old 09-09-2003, 10:03 AM   #37
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I do 10k with AMSOil. While it is dark when it comes out, it is still flowing quite well. Over 10K I lose ~1 quart. I'm at 42,000 miles.

Something to ponder:
http://neptune.spacebears.com/cars/s.../oil-life.html

Tom
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Old 09-09-2003, 10:15 AM   #38
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realistically it's between 3-5K for me. though normally it's closer to 5. it's becoming a little less since I don't drive the scooby much anymore.

oil is always fine for me, and I didn't really lose any oil, though I haven't changed it since my seals went in the turbo- it was a fresh change anyway

slide- pretty interesting write up

speed safely

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Old 09-09-2003, 10:33 AM   #39
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Here are my thoughts....

Engine oil provides 4 basic functions:

* lubricate the internal moving parts (duh)

* help seal the piston rings

* helps cool the engine

* clean the carbon deposits from the moving parts

I can see an oil doing 3 out of these 4 things for up to 20k miles, but I just can't see oil efficiently cleaning the carbon deposits past 3-5k miles.

Just my $.02
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Old 09-09-2003, 11:31 AM   #40
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Quote:
Originally posted by SlideWRX
I do 10k with AMSOil. While it is dark when it comes out, it is still flowing quite well. Over 10K I lose ~1 quart. I'm at 42,000 miles.

Something to ponder:
http://neptune.spacebears.com/cars/s.../oil-life.html

Tom

AWSOME FIND thank you
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Old 09-09-2003, 02:01 PM   #41
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I'm about to do my 2nd oil change on the wrx.... First change was at 1k (switched to Motul synthetic). I'm on my 2nd change at 4k and I'm going to try new stuff on the market.

Turbonetics has a new oil. My friend who works there uses this oil in his stage 4 300zx T/T and highly recommends it.

I cut/pasted this from their site....

Turbonetics TS-1 Technology Driven, Competition -Proven Synthetic Performance Motor Oil is formulated to provide superior protection for gasoline engines under extreme, demanding conditions. Engineered with unique additives, TS-1 Synthetic Performance Motor Oil offers outstanding high-temperature control properties and helps reduce engine wear.

This 100% synthetic oil (full PAO) exceeds conventional oil requirements and delivers the ultimate in engine protection for forced-induction (turbocharged / supercharged) and naturally aspirated gasoline engines. Excellent for high-performance street and race engines. Exceptional for severe situations such as towing, stop-and-go driving and prolonged idling.

* Contains VisTech , an exclusive technology-driven, competition-proven agent that provides a protective barrier for critical bottom-end components.
* Blu-Ester top-treat provides better coefficient of friction thereby unleashing additional horsepower.
* AFX 3 foam-inhibitor minimizes frothing and overflow - vital to turbo/high-performance applications.
* Compatible with conventional engine oil and suitable for top-off and service fills.
* Viscosity index of 175.
* Flash point above 450F.
* Meets and exceeds API Service SL.

thoughts, comments, anyone tried it yet?

Last edited by 5-speedfreak; 09-09-2003 at 02:38 PM.
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Old 09-09-2003, 02:25 PM   #42
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Quote:
Originally posted by 5-speedfreak
I'm about to do my 2nd oil change on the wrx.... First change was at 1k, 2nd change at 4k. I switched to synthetic at 1k.

I'm going to try Turbonetics new oil. My friend who works there uses this oil in his stage 4 300zx and recommends it.

Turbonetics TS-1 Technology Driven, Competition -Proven Synthetic Performance Motor Oil is formulated to provide superior protection for gasoline engines under extreme, demanding conditions. Engineered with unique additives, TS-1 Synthetic Performance Motor Oil offers outstanding high-temperature control properties and helps reduce engine wear.

This 100% synthetic oil (full PAO) exceeds conventional oil requirements and delivers the ultimate in engine protection for forced-induction (turbocharged / supercharged) and naturally aspirated gasoline engines. Excellent for high-performance street and race engines. Exceptional for severe situations such as towing, stop-and-go driving and prolonged idling.

* Contains VisTech , an exclusive technology-driven, competition-proven agent that provides a protective barrier for critical bottom-end components.
* Blu-Ester top-treat provides better coefficient of friction thereby unleashing additional horsepower.
* AFX 3 foam-inhibitor minimizes frothing and overflow - vital to turbo/high-performance applications.
* Compatible with conventional engine oil and suitable for top-off and service fills.
* Viscosity index of 175.
* Flash point above 450F.
* Meets and exceeds API Service SL.

thoughts, comments???

that really wont mean anything to anyone unless someone has used it and knows that oil.
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Old 09-09-2003, 02:34 PM   #43
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After I use it, I'll let you know what I experience. Turbonetics has an excellent name in the industry, and if they stamp their name on it, I'm sure that it will be good.

Stay Tuned...
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Old 09-09-2003, 03:21 PM   #44
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I change my oil every 3k miles exactly with mobile1. I really don't care if it is a gimmick. it makes me feel much better to know that i have fresh oil in my car.
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Old 09-09-2003, 03:35 PM   #45
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I havent changed mine in 23,000 miles. Who cares its just a car.
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Old 09-09-2003, 03:37 PM   #46
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Quote:
Originally posted by STEALTH-WRX
I havent changed mine in 23,000 miles. Who cares its just a car.
LMAO
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Old 09-09-2003, 03:45 PM   #47
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Mobil 1 every 3,750, as the manual recommends for severe duty. It may be over kill, but it is cheap peace of mind.

I can't help but notice your poll doesn't have the option for either factory recomended drain intervals: 3,750 or 7,000.
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Old 09-09-2003, 04:53 PM   #48
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Quote:
quote:
Originally posted by simwahWRX
Was going 3k, then I had my oil analyzed. The lab said I'd even be safe at 6.5K, but I now do 5K, anyway.
Quote:
Originally posted by D-I-Z-Z-L-E


what brand? mods? what type of driving?
Mobile1 5W30

Cobb Club Spec, plus APS SR30 turbo, TMIC, AccessECU (RT Spec)

Moderate driving (don't go over 6K rpm more than 3-4 times a week)

oil analysis (prior to turbo and AccessECU):

4,888 miles (0 make up added)
TBN 13.0
Aluminum 3
Chromium 1
Iron 7
Copper 1
Lead 2
Tin 1
Molybdenum 71
Ni 0
Manganese 0
Silver 0
T8itanium 0
Potassium 0
Boron 175
Silicon 6
Sodium 9
Ca 2840
Magnesium 15
Phosphorous 747
Zn 971
Barium 0
viscosity 58.5
Flashpoint 385F
Fuel <0.5
Antifreeze 0%
Water 0%
insolubles 0.4

28.4mpg on Shell 93 octane
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Old 09-09-2003, 05:56 PM   #49
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It is normal for the flat 4 to eat oil between oil changes. If you start to consume large amounts then you better start to worry.

I am usually about 1-1.5qts lower between 3K oil change intervals.

3K changes with Mobil 1 and sometimes Amsoil.
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Old 09-09-2003, 06:54 PM   #50
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Quote:
Originally posted by Need4Boost
It is normal for the flat 4 to eat oil between oil changes. If you start to consume large amounts then you better start to worry.
I check my oil at every fill up and the car has yet to use any perceptible amount of oil in 36K miles of driving. Therefore I would argue that while it may not be *uncommon* for the flat 4 to use some oil (or any gas engine for that matter), it is not "normal".
I know it is very common for BMW engines to use oil, especially the higher performance models.
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