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      10-26-2020, 03:04 PM   #1
Pussiwillow
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Approaching 70k n55 maintenance

Hey guys! Have a fairly new to me 2014 335i msport zf8 automatic, I'm approaching 70k miles. I haven't touched the car aside from charge pipe and downpipe. I have a 1000$ budget for maintenance DIY.
This platform is new to me, PO serviced the car regularly but doesn't know what had been changed or done so I would like to have piece of mind for myself.
What should I prioritize for maintenance on engine and drivetrain?

Going to do an oil and filter change, what's the consensus on oil weight and brand specific, we are approaching winter however I'm in AZ and we don't usually go under 40• winter.

Going to do plugs, should I do the coils as well? Package deals on fcp have delphi and Bosch brand for good prices, maybe worth it?

Should I do the water pumps and thermostat at this point? Any particular hoses I should replace, all? Be one and done?

Transmission fluid and pan replacement?

Drive belt and tensioner?

Anything is super helpful thanks guys
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      10-26-2020, 03:59 PM   #2
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Plugs: 60k miles

Coils: 100k miles

ATF: approx 75k miles (iirc revised recommendation from ZF)

Water pump/thermostat: Whenever it starts to act up as it tends to fail slowly (ex, cooling fan continuously running at high speed).

Motor Oil: For the 10k mile drain interval look for LL01, LL01FE, or LL04 oil certs. If for some weird reason you can't find it then look for Mercedes Benz 229.50, 229.51 VW 504,507

Weights 0w-30, 0w-40, 5w-30, 5w-40

Walmart Castrol 0w40 is popular, so is M1 0w40, BMW TPT (dealer oil) is also very good.

Belt tensioner: It'll allow the belt to squeak. Replace belt along with it.


First I would look at the oil filter housing gasket (OFHG) and valve cover gasket for leaks. You don't want to let the OFHG go unattended.
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      10-26-2020, 04:02 PM   #3
Pussiwillow
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Quote:
Originally Posted by F32Fleet View Post
Plugs: 60k miles

Coils: 100k miles

ATF: approx 75k miles (iirc revised recommendation from ZF)

Water pump/thermostat: Whenever it starts to act up as it tends to fail slowly (ex, cooling fan continuously running at high speed).

Motor Oil: For the 10k mile drain interval look for LL01, LL01FE, or LL04 oil certs. If for some weird reason you can't find it then look for Mercedes Benz 229.50, 229.51 VW 504,507

Weights 0w-30, 0w-40, 5w-30, 5w-40

Walmart Castrol 0w40 is popular, so is M1 0w40, BMW TPT (dealer oil) is also very good.

Belt tensioner: It'll allow the belt to squeak. Replace belt along with it.
Thank you for taking the time to reply
This helps out a lot thanks
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      10-27-2020, 03:50 AM   #4
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Last time you did brake fluid? it's a time interval as opposed to mileage.
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      10-27-2020, 05:00 AM   #5
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Plugs yes. Oem, or Bosch equivalent to save some coin.

Don't change ignition coils unless you need to our see cracks in the plastic.

Check for oil leaks: OFHG #1, VCG #2, oil pan #3.

Transmission fluid is nice too. Bmw says life time by ZF says 60-70K. Listen to ZF.
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      10-27-2020, 11:00 AM   #6
Pussiwillow
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Quote:
Originally Posted by davidr3 View Post
Last time you did brake fluid? it's a time interval as opposed to mileage.
Fairly certain the last service done from PO was 4k miles ago and it was oil and brake fluids included
But he doesn't know for sure if the brake fluid was involved
"He thinks"
So I will add that to the list so I know for myself
Thanks
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      10-27-2020, 11:12 AM   #7
Pussiwillow
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Quote:
Originally Posted by Logicoeur View Post
Plugs yes. Oem, or Bosch equivalent to save some coin.

Don't change ignition coils unless you need to our see cracks in the plastic.

Check for oil leaks: OFHG #1, VCG #2, oil pan #3.

Transmission fluid is nice too. Bmw says life time by ZF says 60-70K. Listen to ZF.
Thank you sir
I'll probably change the ofhg when I do belt and tensioner at the time of oil change
Valve cover looks fresh for now
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      10-28-2020, 06:50 AM   #8
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Quote:
Originally Posted by F32Fleet View Post
Plugs: 60k miles

Coils: 100k miles

ATF: approx 75k miles (iirc revised recommendation from ZF)

Water pump/thermostat: Whenever it starts to act up as it tends to fail slowly (ex, cooling fan continuously running at high speed).

Motor Oil: For the 10k mile drain interval look for LL01, LL01FE, or LL04 oil certs. If for some weird reason you can't find it then look for Mercedes Benz 229.50, 229.51 VW 504,507

Weights 0w-30, 0w-40, 5w-30, 5w-40

Walmart Castrol 0w40 is popular, so is M1 0w40, BMW TPT (dealer oil) is also very good.

Belt tensioner: It'll allow the belt to squeak. Replace belt along with it.


First I would look at the oil filter housing gasket (OFHG) and valve cover gasket for leaks. You don't want to let the OFHG go unattended.
This is a nice listing. Many thanks
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      10-29-2020, 01:54 PM   #9
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Quote:
Originally Posted by F32Fleet View Post
Plugs: 60k miles

Coils: 100k miles

ATF: approx 75k miles (iirc revised recommendation from ZF)

Water pump/thermostat: Whenever it starts to act up as it tends to fail slowly (ex, cooling fan continuously running at high speed).

Motor Oil: For the 10k mile drain interval look for LL01, LL01FE, or LL04 oil certs. If for some weird reason you can't find it then look for Mercedes Benz 229.50, 229.51 VW 504,507

Weights 0w-30, 0w-40, 5w-30, 5w-40

Walmart Castrol 0w40 is popular, so is M1 0w40, BMW TPT (dealer oil) is also very good.

Belt tensioner: It'll allow the belt to squeak. Replace belt along with it.


First I would look at the oil filter housing gasket (OFHG) and valve cover gasket for leaks. You don't want to let the OFHG go unattended.
Yeah ZF 8AT recommendation was recently revised to 150k km, or shorter if necessitated by driving conditions. I attached the PDF to my post here: https://f30.bimmerpost.com/forums/sh...32&postcount=7

Only other thing i would say is expect shorter intervals than 60k for spark plugs once FBO+tuned / turbo upgrade. Closer to 15k is typical, although thats more preventative and you can probably stretch them a bit longer if you really wanted to. People usually also shorten oil changes to 5k once modded/tuned significantly.

I do brake fluid flush every 2 year per dealer recommendation but some people disagree its necessary and stretch it longer.

Coolant is supposed to be "lifetime", but plan on a flush/change at he time of thermostat/water pump.
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