View Full Version : Oil level question


Moc247
02-23-2005, 01:43 AM
Does the 8 have an electronic oil level gage/indicator? If not, do you guys just check it constantly? From everything I've heard the rotary burns oil very fast.

fullsmoke
02-23-2005, 02:23 AM
it doesn't burn very fast... however, i've only had my 8 for a week. i do have plenty of experience with rx7s as i own 3 of em. the 8 has a warning light that will come on when it's low. just check every 300 miles (is this what the manual says? i can't remember) or so and you'll be fine.

FS

9G Redline
02-23-2005, 02:26 AM
I check mine every week and that's babying my car too. In 12,000 mi. and two oil changes I've only added 4 quarts. The needle for oil pressure is a dummy gauge. However my understanding is that Mazda recommends you checking the oil level every other tank of gas. Each car burns different amounts of oil as well as gas. To each their own; hope this helps.

9G

Nubo
02-23-2005, 04:02 AM
No on-dash indicator (would be nice); just a low-oil light. It is recommended to check "constantly" if you call every 500 miles or so "constantly". Up to 1 quart per 600 miles is considered within normal for normal service, though most owners report significantly lower consumption than this. Difference between high and low on the dipstick is about 1.8 quarts. Under extreme service (track) oil consumption can be higher; it's based on rpm.

Really not a problem. Regular oil checks are good practice for any car. We just have to add a little more often than most.

CaptainZoom
02-23-2005, 04:34 AM
I've added 2 litres in 8000 km.

GRT8
02-23-2005, 05:34 AM
I check mine every Monday and Thursday. Just takes a few minutes but gives me peace of mind.

Kain
02-23-2005, 07:39 AM
well let me just say that when the light comes on your car is VERY low on oil, so don't make it practice I suppose

rx8wannahave
02-23-2005, 08:22 AM
I have had my 8 for 1,350 miles now and I can tell you that for at least my car the oil consumption is no major deal at all. It drinks very little from what I have experienced but I too check it once a week just in case.

Like they said, Mazda recommends you check it ever-other gas stop.

Since I go 10-12 days between fill up's I just check it weekly.

jenkins-crew
02-23-2005, 08:31 AM
1 quart every 1000 miles, about 2 quarts in between oil changes and you should never have any problems, If you see the oil light come on I would check and add oil immediately...

StewC625
02-23-2005, 09:22 AM
My cars and I have a date every Friday afternoon around 4:30 PM. If the weather is warm, out comes the car washing stuff and a few beers. Both cars get their oil checked - valuable on the RX-8, useless on my wife's Honda, but makes me feel better, their tires checked, washed and the gas tanks filled. If it's cold out, we make a trip to the carwash instead of hand washing in the driveway. Can't wait for warm weather to return! But it's just part of a weekly routine, that's all.

Make a date with your -8 for a little "love time" with it - do it every week - wash it, vaccuum it, just drive it, whatever, but then check your oil while you're at it.

As someone else stated, there is an idiot light in case you forget - but it only tells you when you're much too low.

Also, my RX-8 burns a quart every 3000-4000 miles - I'd hardly say thats "burns oil very fast".

Go48
02-23-2005, 09:36 AM
1 quart every 1000 miles, about 2 quarts in between oil changes and you should never have any problems, If you see the oil light come on I would check and add oil immediately...

One qt in 1000 miles sounds excessive to me. In 1000 miles my oil is about a half inch below the top mark on the dipstick. I guess that would equate to approximately one qt in 3000 miles. Based on the experience of others on the forum that seems like the norm.

jenkins-crew
02-23-2005, 09:41 AM
really.....think I should take it in????

StewC625
02-23-2005, 09:49 AM
Oil consumption is directly related to driving habits. If you drive very hard with lots of wide-open throttle and high-rpm running, you will see faster consumption than if you baby it.

I can see the oil level drop noticably after a day at the track, versus, it takes weeks for the oil level to drop in my normal driving habits.

jenkins-crew
02-23-2005, 09:51 AM
so you think I am enjoying the 8 too much??

GRT8
02-23-2005, 10:54 AM
I know I AM...

Rotario
02-23-2005, 11:04 AM
Does the 8 have an electronic oil level gage/indicator? If not, do you guys just check it constantly? From everything I've heard the rotary burns oil very fast.
Please don't wait until the low oil light comes on to check the oil. Like any warning light, the low oil light is only telling you that you're close to severe engine damage. Use the light for what it was intended -- a warning of impending doom and denoting a need for action. Check your oil every other fill-up as the manual recommends. It only takes a minute.

Just my $0.02 on the subject,
Bill

StewC625
02-23-2005, 11:45 AM
Or do what I do ... make a date with your -8. She's your best mate. And she loves to have her crankcase probed.

Frank Patrick
02-23-2005, 11:56 AM
I have had two 8s (04/05)- neither one went through that much oil (1 qt/1000 mi?) Sounds a bit much, I would bring it in.

Saxman
02-23-2005, 12:02 PM
I've had my 8 since Dec. '04, and over the 18k miles or so I've put on her, I've averaged adding probably 1qt between each oil change. (Done regularly at 3k mile intervals).

jenkins-crew
02-23-2005, 12:04 PM
ok, I'll take her to the doctor :(

mattisax
02-23-2005, 02:30 PM
well let me just say that when the light comes on your car is VERY low on oil, so don't make it practice I suppose

i just bought an '04 this past weekend. i'm currently "breaking it in" using one of the methods described on this forum. but twice, my low oil level light has come on. both times i was on the highway going around 75–80 (keeping it under 4000 RPM). i checked my oil level yesterday and it was halfway between the high and low level mark, so that means i should add .9 quarts of oil. i'm just wondering if i should be worried that the light came on. it didn't stay on for very long, maybe a coupleof minutes.

jenkins-crew
02-23-2005, 03:16 PM
what would cause our engine to use 1 quart every 1000 miles? Easily fixed or costly part?

StewC625
02-23-2005, 03:23 PM
By design. It feeds oil through crankshaft channels into the rotors for cooling and that oil flows thorugh the rotors out to the side and apex seals where it constantly "paints" a coating of oil on the seals and rotor housings.

At high RPM running, it pumps more oil. If more of your miles are spent at high RPM than average, you will burn more oil than average - that simple. If you spend a lot of time driving aggressively and covering fewer miles, you will have a higher oil use rate per 1000 miles than a guy who is cruising that 1000 miles in 6th gear at 65 mph (and a steady 3000 rpm).

Mazda will not consider your car "out of spec" until it is consuming more than a quart every 500 miles (or was it 700). Your owners manual has the common oil consumption rate listed.

If you call your dealer for 1000/miles a quart consumption they are only going to tell you it is normal.

FYI

Theres been a thousand threads on oil consumption Jenkins. Please read a few of them.

Stew

jenkins-crew
02-23-2005, 03:30 PM
Sorry :( we were kind of on the subject :( You summed it up perfectly, Thank You.

mattisax
02-23-2005, 03:45 PM
I just searched the forum and think I might have to get my oil pan changed on my new '04. I'm gonna top off the oil and see if the light still comes on periodically, but I will probably have them replace the pan since there was TSB on it. I need to get a list of all the TSB's that were needed for the '04s.

jenkins-crew
02-23-2005, 03:54 PM
Here you go:

http://www.rx8club.com/showthread.php?t=14453

mattisax
02-23-2005, 04:16 PM
perfect, i'm gonna print out the ones that i have already noticed and take them in for service. are there any that i should definitely do no matter what? i've heard people on here discussin a flash update, shouldi have that done if it hasn't been?

Moc247
02-23-2005, 04:59 PM
Thanks for all the replies. I was just wondering about the indicator.

I did not mean a warning light, I was refering to an actual indicator that some of the more expensive cars have. With such cars it eliminates the need to pull the dipstick and you know exactly when to get a change or add more. Off the top of my head I know the C6 has such an indicator.

StewC625
02-23-2005, 09:37 PM
Thanks for all the replies. I was just wondering about the indicator.

I did not mean a warning light, I was refering to an actual indicator that some of the more expensive cars have. With such cars it eliminates the need to pull the dipstick and you know exactly when to get a change or add more. Off the top of my head I know the C6 has such an indicator.

C6: $55000
RX-8: $30,000.

Any questions?

Moc247
02-24-2005, 01:46 AM
Originally Posted by StewC625

C6: $55000
RX-8: $30,000.

Any questions?

Yeah, what's your point? That that the $25k price difference is for the oil level indicator?

The 8 has lots of gadgets, just wondering if this was one of them.

BTW, C6 is not $55k - thousands less even with every option and z51 package. Base is $44 - that's a lot of bang for you buck.

Nubo
02-24-2005, 03:58 AM
C6: $55000
RX-8: $30,000.

Any questions?

1983 AMC/Renault Alliance - $8,000?

It had an oil-level meter on the dash and was quite useable. Not a high-price item.

jenkins-crew
02-24-2005, 08:04 AM
No, unfortunatley that isn't one of them :( But you could get and oil catch can that I think shows oil level, under the hood.

Rotario
02-24-2005, 09:19 AM
1983 AMC/Renault Alliance - $8,000?
Decisions, decisons. Um. Hmmmm. Naw, I think I'll stick wih the '8. :D

RX8NS
02-24-2005, 03:04 PM
:( Not to happy with the fuel economy which in this cold weather is way less than I could have realistically hoped for. Last night when I re-fuel for the first time since I took delivery last week, I checked the oil and was mortified at the condition of the oil on the dipstick. It looked like a stir stick from a cappucino!! The service manager assures me that that is normal, though I found it difficult to even measure where the oil level was. Any comments?

Rotario
02-24-2005, 03:07 PM
:( Not to happy with the fuel economy which in this cold weather is way less than I could have realistically hoped for. Last night when I re-fuel for the first time since I took delivery last week, I checked the oil and was mortified at the condition of the oil on the dipstick. It looked like a stir stick from a cappucino!! The service manager assures me that that is normal, though I found it difficult to even measure where the oil level was. Any comments?
Yup. There is a TSB out to insulate the dipstick tube to prevent (or at least reduce) this problem. Your dealer should install it under warranty if you ask.

HTH,
Bill

Rotario
02-24-2005, 03:09 PM
:( Not to happy with the fuel economy which in this cold weather is way less than I could have realistically hoped for. Last night when I re-fuel for the first time since I took delivery last week, I checked the oil and was mortified at the condition of the oil on the dipstick. It looked like a stir stick from a cappucino!! The service manager assures me that that is normal, though I found it difficult to even measure where the oil level was. Any comments?
Forgot to mention: your mileage should improve quite a bit as you get some miles on the engine. My first couple tanks were pretty dismal (mpg-wise), but the mileage has improved quite a bit since then (I'm at ~1550 miles right now).

Nubo
02-24-2005, 03:09 PM
Yep, check the "issues and problems" section. This isn't harmful in itself but if it is bad enough to prevent you from easily checking the oil level, there is a fix (TSB) available.

RX8NS
02-24-2005, 03:13 PM
Thanks...I'll mention that.

BTW, I live in Halifax, Nova Scotia and can't wait for the warm weather to come so I can really open her up!!! Cabot Trail has to be one of the best roads in N. America for the 8! My car is black on black/taupe GT.

tiggerlee
02-24-2005, 03:22 PM
A little over 2500 miles on mine and only used 1/2 quart.

Snake8
02-24-2005, 03:26 PM
Just passed 2K miles on mine. And haven't checked oil level yet. 1/2-1 quarter less won't hurt the engine. Are we being too picky???

Go48
02-24-2005, 03:43 PM
<<SNIPPED>> Cabot Trail has to be one of the best roads in N. America for the 8! My car is black on black/taupe GT.

Oh yeah!! Been there, done that, although it wasn't in an RX-8 at the time. Watch for moose and the drop off's on the curves. :D

salituro64
02-24-2005, 04:41 PM
1 qt. between 3000 mile oil changes. I get on it when I'm on the highway, but in town or city driving I go like most average citizens.

EDIT - IMHO if anyone goes through 1 qt every 1000 miles must be driving it like they stole it, always.