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> Oil dipstick markings, 75 914-4 - what are the markings on the dipstick?
northern sailor
post Jul 7 2019, 01:17 PM
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There are two markings quite close together, but my Porsche service always adds oil about 1/2" higher than the top mark. Is this overfilling.
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Tom_T
post Jul 7 2019, 05:02 PM
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QUOTE
There are two markings quite close together, but my Porsche service always adds oil about 1/2" higher than the top mark. Is this overfilling.


Yes, that's about 1/2 pint too much, & they're probably doing cuz they're either too lazy to check as they refill, or want to use up the full quarts to do the refill quickly, or is giving the task to somebody inexperienced.

Ask them to leave the extra 1/2 Qt. in the bottle for you to take for topping off later (since you're paying for the full Qt.) - now that we have screw-top oil bottles with sight line level markings on the side, this should not be an issue - & ask them not to fill past the top mark.

Half a quart over once in a while may not be a big deal on a new 914, but the extra pressure may cause issues with a 43-50 year old car with worn seals, oil lines, cooler, etc.

If they refuse or can't seem to do it properly in the future after your asking, then you may want to seek a more responsible Porsche or VW mechanic familiar with Type IV aircooled engines - especially if they're more interested in older 911/912/912E/930 models. Afterall, if they cannot do a simple oil change, then how can you trust them with the more important items?

Cheers! (IMG:style_emoticons/default/beerchug.gif)
Tom
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Dr. 914
post Jul 8 2019, 07:32 AM
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great reply Tom, and always remember, northern, to check the oil red hot after the car sits a bit, and make sure you twist the stick to make sure that it is down all of the way
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corby26
post Jul 15 2019, 07:20 PM
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That's a useful info, Tom. Sounds like a nutty job by that shop.
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bandjoey
post Jul 25 2019, 02:34 PM
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Dr. Are you checking the oil after a full warm up and WAITING for it to cool and drain back down before checking? Or checking it HOT? Also, I've read where many overfill 'because the oil in the sump is too low' on hard turns. Is this only for autox people and not daily driving?
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Dr. 914
post Jul 26 2019, 08:21 AM
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we always check the oil red hot, 914-4 with the car off after it settles for ten minutes, sixes with the car idling. On both we make sure that the dipstick is firmly down in the tube so we will not get a misread



QUOTE (bandjoey @ Jul 25 2019, 02:34 PM) *
Dr. Are you checking the oil after a full warm up and WAITING for it to cool and drain back down before checking? Or checking it HOT? Also, I've read where many overfill 'because the oil in the sump is too low' on hard turns. Is this only for autox people and not daily driving?

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