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Old 07-24-2012, 07:34 AM   #1
veel86
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Join Date: Jan 2012
Chapter/Region: MWSOC
Location: South West Michigan
Vehicle:
2006 Wrx STi
Aspen White

Default Annoying oil stick

Does anyone else have to test there oil levels multiple times to get an accurate reading?
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Old 07-24-2012, 09:57 AM   #2
rudymcskoody
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aspen white

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Yes you should test multiple times on any car. The dip stick is not an accurate measuring tool. You are looking for consistency
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Old 07-24-2012, 11:39 AM   #3
trev762
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I'd have to say that the subys r the worst and seems like every time I check the oil it reads differently. I found the best way is to before u go in for the night I clean the dipstick off then check it in the morning. Some people r saying to put the dipstick back in slowly to get a better reading havnt tried it yet lol
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Old 07-24-2012, 02:49 PM   #4
Slimsti
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415/405 Precision Tuning

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It used to be really difficult for me to get an accurate consistent reading till i started doing it this way. Make sure ur on flat level ground, take off the oil fill cap and pull the stick out and wipe it off. Slowly put it back in so that u dont create pressure in the system from the o-ring on stick. Wait about 5 seconds and remove it quickly and check. I generally can get 3 exact readings doing it this way. When i used to check it with the oil fill cap on i could never get an accurate reading.
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Old 07-24-2012, 03:57 PM   #5
KillerBMotorsport
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^ Slimsti is onto something here... Another alterantive is to remove that o-ring when checking the oil.

The whole problem stems from the dipstick/dispstick tube in how it enters the pan. The dipstick doesn't actually go into the pan, but relies on oil making it's way into the dipstick tube, which is why it's so susceptible to the slight pressure from o-ring/dipstick seal when inserting the dipstick. That and the angle the dipstick/tube goes into the pan is somewhere in the 45 range meaning you can get different readings on each side of the dipstick (always go with the lowest).

As far as the best time to check the oil we recommend sticking to the factory's recommended procedure...

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Old 07-24-2012, 04:42 PM   #6
Darkside racing
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Ill check between 5-10 times man
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Old 07-24-2012, 07:15 PM   #7
trev762
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Quote:
Originally Posted by KillerBMotorsport
^ Slimsti is onto something here... Another alterantive is to remove that o-ring when checking the oil.

The whole problem stems from the dipstick/dispstick tube in how it enters the pan. The dipstick doesn't actually go into the pan, but relies on oil making it's way into the dipstick tube, which is why it's so susceptible to the slight pressure from o-ring/dipstick seal when inserting the dipstick. That and the angle the dipstick/tube goes into the pan is somewhere in the 45 range meaning you can get different readings on each side of the dipstick (always go with the lowest).

As far as the best time to check the oil we recommend sticking to the factory's recommended procedure...
Haha!! No f***ing way this makes total sense now cuz I'm thinking if the dipstick is in the oil pan itself why was I getting 2 total different readings on the dipstick. Thx slimsti and killerB ill try pulling the filler cap next tome cuz some mornings I would have forgotten to clean the dipstick off before going in for night lol.

When I first got my sti I would have to top it up once before every oil change and kept over filling so it would cause me to do early oil changes/
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Old 11-28-2012, 09:26 PM   #8
farmersteve
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Default inconsistent dipstick readings 2.5 outback

Bought this car used and had consistent burned oil smell which I have now identified as a defective Subaru filter which had the gasket mashed down so that the can bottomed out before the gasket. I found this on my first oil change today.

The kicker was that I did not see oil loss on the dipstick. Being new to the 2.5 dipstick craziness, I did not realize I was being lied-to. It really was losing oil, but dipstick regularly showed either full or 1/2 quart low. It was driving me nuts, since I was trusting the dipstick but wondering where the burning oil smell was coming from.

At draining the oil was easily 2 qts low (dipstick showed 1/2 qt low). With a new Wix filter and measured fill I know the oil is right. After reading all sorts of crazy theories on Subaru dipstick issues this forum finally explained the problem - dipstick tube is immersed in the oil, and the o-rings on the oil fill cap and on the dipstck create weird, inconsistent effects - like drawing the oil up the dipstick tube like a straw and giving inconsistent, dangerously inaccurate oil level readings. In my case, no matter how I measured (cold, warm, engine sitting, mulltiple measures, etc. etc.) the stick showed a safe oil level. It wasn't safe since it was chronically low - and getting lower. The engine survived (never ran hot, oil light never came on), and the former owner changed oil on the severe schedule (3750) so she probably never even checked the oil. Fortunately I observed the interval and found the real story.

Really a stupid dipstick design, especially for a high consumer interface part of the vehicle. Thanks for saving my sanity - and my engine.
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Old 11-28-2012, 10:26 PM   #9
hutch959
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Default

its absolutly rediculous!!! ive added oil.. drained oil... checked..checked and checked again.
Ive tried all the tricks... and to be honest? i really dont know if my oil is full or not.

currenlty i check it when its hot (because with the oil cold its all over the place), and i have the high oil mark around the notch and the low oil mark a couple mm below the top hole. (because depending on what side of the stick you look at its different)

i figure its close enough
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