|
|
|
07-20-2018, 10:06 PM | #24 |
Brigadier General
1540
Rep 3,071
Posts |
Oil is cheap, motors are expensive. I change mine every 5000-7500. YMMV.
__________________
2011 135i w/ DCT | ZSP Sport Pkg | PPK | Ohlins R
|
Appreciate
4
|
07-21-2018, 02:52 PM | #25 |
Captain
342
Rep 643
Posts |
I am completely comfortable with each of us making our own decisions regarding oil changes and then living with the results.
I change mine (with synthetics) at 5000-6000 mi which works out to about 10-14 mos. Blackstone says I can easily go another few thousand but I do not intend to. Neither did they make any comment about synthetics not coming into their own until 7000 mi. I am also pretty sure I will read others comments but stick to my own schedule because it is one I am comfortable with. So, feel free to tell me why I (we) are wrong, but do feel sure I will ignore such advice until there is some realistic, factual based evidence to do other wise. |
07-21-2018, 03:04 PM | #26 | |
E82 Mudflap Ambassador
2214
Rep 2,219
Posts
Drives: '08 128i
Join Date: May 2016
Location: Orlando, FL
|
Quote:
|
|
Appreciate
1
ignote26.00 |
07-21-2018, 05:58 PM | #27 |
Brigadier General
368
Rep 3,547
Posts |
five_timer,
When the PCV valve opens because the pressure exceeds it's setting, it is letting gas out. That gas obviously had to get in. It is probably gas getting past the rings. That sort of ventilation is a lot worse for the motor than ambient air that may come in while the oil is changed. The point is simply that car engines are not completely sealed systems. Ambient air is one of the least damaging things that get in. If there is something else I said that you do not understand, please let me know. Jim
__________________
128i Convertible, MT, Alpine White, Black Top, Taupe Leatherette, Walnut, Sport
Ordered 5/22/09, Completed 6/4/09, At Port 6/9/09, On the Georgia Highway 6/13/09, Ship Arrived Charleston 6/24/09 at 10pm, PCD 7/21/09 |
Appreciate
1
JimVonBaden902.50 |
07-21-2018, 10:25 PM | #28 | |
no turbo, no auto, no iDrive, no kidding
105
Rep 425
Posts |
Quote:
Here's a fact: there's no evidence that following recommended intervals causes any harm, and plenty of proof that it does not. All you've got is your platitudes about the price of oil and engines. Just admit it's 100% psychological and move on. |
|
Appreciate
0
|
07-22-2018, 03:20 PM | #29 | |
Brigadier General
2311
Rep 4,341
Posts |
Quote:
You are lucky because your motor is not direct injection nor turbocharged. I have both versions. My 2003 ZHP is close to your motor and I go 7500 miles but change it every year regardless. Jut because it's easy to remember. If you are a mellow driver and check your oil level every month so that it is always topped off, you can probably even go 10K miles on a good oil like BMW 5w-30, Pennzoil Euro Platinum 5w-40, Castrol Edge/Syntec 5W-40 LL-01 oils. The LL-01 means Long Life, 2001. That means that the oils were certified in 2001 to last BMWs nutty long life interval. In 2001 all of BMWs cars were like yours, normally aspirated, non Turbo. The high revving M3 got a different 10W-60 oil. So the consensus of 7500 miles or 1 year whichever comes first is really the goldilocks setting and what I recommend also for your car. As everyone mentioned, I would worry more if you had the direct injected turbo motors like the N54 and N55. Those are much harder on oil. |
|
07-22-2018, 03:40 PM | #30 | |
Brigadier General
2311
Rep 4,341
Posts |
Quote:
But what ends up happening in the real world is that these cars consume some oil and with these long 2 year intervals never check their oil so they spend months driving around with 6 quarts instead of 7 which affects how much wear happens on the oil. If you change it regularly, you tend to be safer because you replace it while it's only down 1/2 a quart and at hafl the interval. So it totally makes sense if you are on top of checking your oil regularly and using good filters that will not get brittle and disintegrate after two years. But the turbo motors are a different story. They essentially were delivered with the same 5W-30 oil of the non turbos despite higher thermal loads and direct injection where raw fuel makes it onto the cylinder walls and mixes with the oil. Eventually, this starts to weaken the oil so now you can gamble that will be providing full protection on that summer canyon run. Once you understand what the same oil is being subjected too, 12-15K miles almost seem out of the question in a DI Turbo car. I use the 7500 mile/1 year guideline on my turbo but it is actually more like 3000 miles because I only put that much on my 1M in a year. So you raised a great point but I'm sure even consumer reports said MOST of the time it is a waste. There are some times it makes sense and understanding your motor is vital. Most LL-01 oils are built to survive direct injected turbo motors, which means that you 128i guys have it easy! |
|
Appreciate
1
lab_rat394.50 |
07-22-2018, 04:05 PM | #31 |
Brigadier General
368
Rep 3,547
Posts |
five_timer,
Surely you don't think that piston blow by is good for your engine. It dilutes the oil and contaminates it. It is part of the reason we have to change the oil. Blow by is why we need a PCV. I do not argue that 5K oil changes are necessary, only that I am sure they are often enough and easy to remember to do. I do not think that longer oil change intervals are very risky but I do think depending in the car to tell you when the oil needs changed has some risk. I think it is a very good idea to keep track yourself to make sure the car's interval makes some sense. Jim
__________________
128i Convertible, MT, Alpine White, Black Top, Taupe Leatherette, Walnut, Sport
Ordered 5/22/09, Completed 6/4/09, At Port 6/9/09, On the Georgia Highway 6/13/09, Ship Arrived Charleston 6/24/09 at 10pm, PCD 7/21/09 |
Appreciate
0
|
07-22-2018, 06:13 PM | #32 | ||
Major General
4338
Rep 6,196
Posts |
Quote:
So many sludge issues and seized engines. |
||
Appreciate
0
|
07-22-2018, 08:14 PM | #33 |
Private First Class
26
Rep 130
Posts |
If you drive it hard change it every 5k. If you drive it easy change it every 7.5k. If you are super concerned about the environment then never change it or sell it and get yourself a bicycle.
|
Appreciate
0
|
07-22-2018, 09:10 PM | #34 |
shmo
383
Rep 1,026
Posts |
For The N55'ers .. How Often Do U Top Off Your Oil??
Seems Like Every Couple Of Months I Gotta Put It A Quart.. Anyone Else Need To Do This?? Maybe A Leak? Ive Heard Turbo Equiped Engines Spend Oil.. But Never Owned A Turbo Cr Till Now.. Whats The Norm?? I Always Heard Oil Change After 3.5k.. As A General Rule.. Maybe This Was Specific To Reg Oil Rather Than Synthetic.. ?
__________________
No sig
|
Appreciate
0
|
07-22-2018, 09:16 PM | #35 | |
Sideways and Smiling
3027
Rep 2,860
Posts
Drives: In Exuberance
Join Date: Mar 2017
Location: Rosamond, CA USA
|
Quote:
I change the oil, and don't have to put any in until I change it again. Boo-ya... (I had to spread my NA supremacy propaganda)
__________________
2012 BMW 328i 6-Speed Wagon | Deep Sea Blue with Grey Dakota Leather | Manual Swap, 330i Intake + Tune, 3.15 Helical LSD, Öhlins R&T
(SOLD) 2009 BMW 128i 6-Speed Coupé | Monaco Blue with Black Sensatec | chris_flies' 128i thread |
|
Appreciate
1
Gangplank1539.50 |
07-22-2018, 09:30 PM | #36 | |
shmo
383
Rep 1,026
Posts |
..
Quote:
__________________
No sig
|
|
Appreciate
1
chris_flies3027.00 |
07-23-2018, 05:30 AM | #38 | |
I like turtles!
726
Rep 698
Posts |
Quote:
|
|
Appreciate
1
chris_flies3027.00 |
07-23-2018, 08:47 AM | #39 | |
shmo
383
Rep 1,026
Posts |
..
Quote:
these caps go bad often?? lol sorry bout the caps..
__________________
No sig
|
|
Appreciate
0
|
07-23-2018, 09:00 AM | #40 | |
Major General
4338
Rep 6,196
Posts |
Quote:
I change my oil every 6000 km, even when taking it to the track, and use Castrol 0W40. |
|
Appreciate
0
|
07-23-2018, 09:15 AM | #41 |
I like turtles!
726
Rep 698
Posts |
no the oil caps don't go bad. If there is oil there, it most likely is there from whoever changed the oil last and spilled some. I'd make sure its tight. If it is, have a shop look at the car. Oil filter housing gasket could be leaking, as well as eleventy billion other things. If nothing is leaking externally, you might want to do a leak down test and see if its getting past the rings. Hope you find the leak.
|
Appreciate
0
|
07-23-2018, 11:53 AM | #42 |
shmo
383
Rep 1,026
Posts |
crazy thing is last time I bought a quart at the dealer.. the tec hcame out when I asked for a rag to clean up any spilage since I didn't have a funnel and said " oh yea turbo cars do burn some oil over time"
anyways after cleaning some krusty oil around cap when I filled it there.. I saw some oil krust around the neck again this morning .. that's why I ask if the cap fails .. krust along the rim of the cap yet again ;(
__________________
No sig
|
Appreciate
0
|
07-23-2018, 12:07 PM | #43 | |
Brigadier General
2311
Rep 4,341
Posts |
Quote:
Rubber seal in caps that can harden and deteriorate with age. |
|
Appreciate
0
|
07-23-2018, 12:36 PM | #44 | |
Captain
641
Rep 695
Posts |
Quote:
I’m betting you need a new cap, but also have a different leak or are burning oil. Common areas to check are oil filter housing, valve cover, and oil pan. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|