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-   -   Why you don't ever let dealerships do oil changes. (http://www.the370z.com/engine-drivetrain/88537-why-you-dont-ever-let-dealerships-do-oil-changes.html)

DEpointfive0 04-06-2014 01:33 PM

Quote:

Originally Posted by bmarcinczyk14 (Post 2770913)
My fitting are facing up, which is how they are supposed to according to z1. With them facing downward it will always give you inaccurate readings. I never had a issue before, no matter when I checked my oil. It would always give me the same reading. According to Z1 with this oil cooler, it take about 6 quarts during oil changes, so I can not see how I was at fault for giving them 6 quarts.

Quote:

Originally Posted by bmarcinczyk14 (Post 2770924)
um no I did not? I simply wanted a standard change, which 6 quarts is what's recommend with the oil cooler. they obviously did not allow all the oil to drain fully before filling new oil in..

Sorry, don't blame the dealer, blame yourself.

The FIRST oil change will take 6 quarts, subsequent ones will take a hair over 5, closer to the recommemded 5.125 quarts.


And fittings up means that the 3/4 of a quart that sits in the oil cooler doesn't get changed, which accounts for it not being as clean as normal

bmarcinczyk14 04-06-2014 01:49 PM

I was under the impression it was 6 quarts every oil change with the cooler, can anyone else verify this?

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phunk 04-06-2014 02:06 PM

Looks like everything is fine to me.

Difference from bottom line to top line on the dipstick for most cars is about 1 quart.

You get different readings when you check your oil because it takes a long time for the oil to settle. You could get a slightly lower reading if you are waiting for the oil to come back down from the cylinder heads. You could get a slightly higher reading if you were just driving hard and oil level was splashing around your dipstick.

Overall, this is not at all a super sensitive issue. So long as your oil pump pickup in the bottom of the pan stays submerged, it hardly makes a difference as to PRECISELY how much oil is in the engine. Obviously more oil stabilizes temps and increases oil longevity, but +/- 1/8" on the dipstick is never going to make a difference in anything.

My oil cooler has the fittings facing up as well, I prefer this for proper dipstick readings. Facing down adds a variable to your readings, regarding exactly how long the car has been sitting and how much you estimate your oil cooling system to displace. Thats more than I want to think about when checking my oil. Facing up is more accurate, but obviously you arent changing the oil thats in the cooler since it cannot escape with engine off. Whatever.

6 quarts during an oil change would overfill my car personally. Maybe your oil cooler and lines hold more oil. But for me, 5.5 quarts gets me right to the top line. Use however much it takes.

bmarcinczyk14 04-06-2014 02:09 PM

Quote:

Originally Posted by phunk (Post 2771039)
Looks like everything is fine to me.

Difference from bottom line to top line on the dipstick for most cars is about 1 quart.

You get different readings when you check your oil because it takes a long time for the oil to settle. You could get a slightly lower reading if you are waiting for the oil to come back down from the cylinder heads. You could get a slightly higher reading if you were just driving hard and oil level was splashing around your dipstick.

Overall, this is not at all a super sensitive issue. So long as your oil pump pickup in the bottom of the pan stays submerged, it hardly makes a difference as to PRECISELY how much oil is in the engine. Obviously more oil stabilizes temps and increases oil longevity, but +/- 1/8" on the dipstick is never going to make a difference in anything.

My oil cooler has the fittings facing up as well, I prefer this for proper dipstick readings. Facing down means your dipstick is going to average higher readings when the car has been sitting. Facing up is more accurate, but obviously you arent changing the oil thats in the cooler since it cannot escape with engine off. Whatever.

6 quarts during an oil change would overfill my car personally. Maybe your oil cooler and lines hold more oil. But for me, 5.5 quarts gets me right to the top line. Use however much it takes.

How much oil to u put in between changes with that oil cooler?

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Dreadnaught 04-06-2014 02:09 PM

When you checked your oil did you let the car sit for at least 15 minutes after shutting it off to let the oil make its way into the sump? Did you first pull the dip stick out, wiped it clean, then put the dip stick back in then pull it out to get your reading after letting it sit for 15 minutes?

bmarcinczyk14 04-06-2014 02:15 PM

Quote:

Originally Posted by IP350GT (Post 2771042)
When you checked your oil did you let the car sit for at least 15 minutes after shutting it off to let the oil make its way into the sump? Did you first pull the dip stick out, wiped it clean, then put the dip stick back in then pull it out to get your reading after letting it sit for 15 minutes?

Yes

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phunk 04-06-2014 02:16 PM

Quote:

Originally Posted by bmarcinczyk14 (Post 2771041)
How much oil to u put in between changes with that oil cooler?

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I am not understanding the question exactly. When I change my oil and filter, I put in 5.5 quarts because I just noticed thats what seems to get my car right at the top line when I do a change and then prime the engine and shut off and check.

As for consumption inbetween changes... my car seems to burn about 1/2 to 3/4 quart. BUT if your car isnt turbocharged I would be expecting much less. Most turbo Z's will consume some oil between changes because the turbos sit too low for real good oil evacuation. This allows some of the oil to seep past the seals in the turbos. There is no noticeable smoke or odor, but I definitely burn off a good half quart maybe more between changes. This is why the R35 GT-R added a second stage on the oil pump to pull the oil out of the turbos to reduce oil consumption through the turbo seals.

bmarcinczyk14 04-06-2014 02:21 PM

Quote:

Originally Posted by phunk (Post 2771054)
I am not understanding the question exactly. When I change my oil and filter, I put in 5.5 quarts because I just noticed thats what seems to get my car right at the top line when I do a change and then prime the engine and shut off and check.

As for consumption inbetween changes... my car seems to burn about 1/2 to 3/4 quart. BUT if your car isnt turbocharged I would be expecting much less. Most turbo Z's will consume some oil between changes because the turbos sit too low for real good oil evacuation. This allows some of the oil to seep past the seals in the turbos. There is no noticeable smoke or odor, but I definitely burn off a good half quart maybe more between changes. This is why the R35 GT-R added a second stage on the oil pump to pull the oil out of the turbos to reduce oil consumption through the turbo seals.

Does ur car take more because of the turbos or oil cooler?

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phunk 04-06-2014 02:24 PM

Good point I guess I overlooked mentioning those details.

The turbos will not noticeably increase oil capacity. But the oil pan from my turbo kit increases it just a little bit. How much, I do not know exactly.

My oil cooler is going to increase capacity, however, when your oil cooler is mounted with the fittings facing up, you will disregard this extra capacity as it will never show up a difference on the dipstick, and it will not drain out when you drain the oil. So theres maybe another .5 quart in my oil cooler, but I dont see it when doing the changes. I am sure the hoses going there possibly add another 1/4 quart to my change. I cannot recall how much oil it took before I had the cooler in there.

So everyone's setup, once modified, will be a little different. After a couple oil changes you will just notice how much your car takes during a change. Until then, just do whatever it needs to keep it between the lines and dont stress too much about slight variance on the reading.

gurneyeagle 04-06-2014 02:33 PM

Quote:

Originally Posted by bmarcinczyk14 (Post 2771035)
I was under the impression it was 6 quarts every oil change with the cooler, can anyone else verify this?

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Quote:

Originally Posted by bmarcinczyk14 (Post 2771041)
How much oil to u put in between changes with that oil cooler?

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I can answer your question - I have a 25 row cooler from Z1 and just did my first oil change since the install. I used a five gallon jug of Mobil 1 and the oil level is sitting dead center on the dip stick.

Like others said, just drain out a little oil and refill to the proper level. :tup:

DEpointfive0 04-06-2014 03:16 PM

Quote:

Originally Posted by phunk (Post 2771063)
Good point I guess I overlooked mentioning those details.

The turbos will not noticeably increase oil capacity. But the oil pan from my turbo kit increases it just a little bit. How much, I do not know exactly.

My oil cooler is going to increase capacity, however, when your oil cooler is mounted with the fittings facing up, you will disregard this extra capacity as it will never show up a difference on the dipstick, and it will not drain out when you drain the oil. So theres maybe another .5 quart in my oil cooler, but I dont see it when doing the changes. I am sure the hoses going there possibly add another 1/4 quart to my change. I cannot recall how much oil it took before I had the cooler in there.

So everyone's setup, once modified, will be a little different. After a couple oil changes you will just notice how much your car takes during a change. Until then, just do whatever it needs to keep it between the lines and dont stress too much about slight variance on the reading.

:iagree: well said too :tiphat:

Quote:

Originally Posted by gurneyeagle (Post 2771066)
I can answer your question - I have a 25 row cooler from Z1 and just did my first oil change since the install. I used a five gallon jug of Mobil 1 and the oil level is sitting dead center on the dip stick.

Like others said, just drain out a little oil and refill to the proper level. :tup:

5 GALLONS... You DEFINITELY overfilled your engine/sump
:rolleyes::rofl2:

(I know you mean 5 quarts)

bmarcinczyk14 04-07-2014 10:27 AM

So I decided to drive it yesterday after seeing the level lowered considerably overnight and figured it was not overfilled enough to cause any problems. This morning, after letting it sit overnight, the level is back at the original level! (see first picture)..I kinda started freaking out because I drove it quite hard yesterday thinking the level was just a hair over the H, and now after checking it this morning it's showing almost a quart overfilled. The car did not feel any different, noticed no problems while going wot, so I'm just crossing my fingers it did not cause any damage that is not noticeable at the moment. Regardless, I'm going to drain the excess amount today after work.

JARblue 04-07-2014 10:42 AM

Quote:

Originally Posted by DEpointfive0 (Post 2771026)
Sorry, don't blame the dealer, blame yourself.

The FIRST oil change will take 6 quarts, subsequent ones will take a hair over 5, closer to the recommemded 5.125 quarts.

I'm sorry but that is fvcking retarded, Andrew...

Without an oil cooler, my typical oil change is 5 quarts plus a little from the extra quart I keep around to top off when necessary.

I would rather give the dealer 5 quart jug + a little extra for that reason (hence 6 quarts). If the idiots doing the oil change just threw all 6 quarts in my car without checking the level at completion, that's typical dealer$hit incompetence. NOT MY FAULT

Mandingo 04-07-2014 10:06 PM

Are you on level ground each time you check the oil? Parking facing uphill will cause the reading to be a little lower than the actual oil level and vice versa. Just wondering why your readings are changing if you are waiting 15 mins each time

bmarcinczyk14 04-07-2014 10:09 PM

Yes i was in my garage both times...i drained out a quart this evening and now all is good. Still was very stange i got that just barely over reading once and then way over reading the next day with same techniques.

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