Oil selection.

UK forum for general and technical discussion about the Z3 roadster

Moderator: Gazza

Post Reply
User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 224

  Z3 roadster 1.9i
Contact:

Oil selection.

Post by dazthephot » Mon 10 Feb, 2020 12:26

This is a divisive topic I know so I’ll keep it light.
How different are oils these days? If I put fully synth 5w30 in instead of 5w40 if I buy a brand like Triple QX instead of Castrol what problems will I cause?

As I understand it in the most simplistic terms the 5 bit affects cold starting and the 40 bit affects running temps.

Surely oils are made to a higher standard than existed when my car was built so spending £30 on oil instead of £60 is nothing more than a marketing gimmick?

Happy to be educated.


Sent from my iPhone using Tapatalk Pro
Last edited by dazthephot on Mon 10 Feb, 2020 12:26, edited 1 time in total.

User avatar
Gazza
Site Admin
Joined: Tue 04 Oct, 2005 21:58
Posts: 9446

  M roadster S54
Location: Romford Essex

Re: Oil selection.

Post by Gazza » Tue 11 Feb, 2020 12:45

I’m not a brand specific person when it comes to oil.
If it meets the required spec then it’s ok with me.
Gazza

"Understeer is when you hit the wall with the front of the car, oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall and torque is how far you take the wall with you"

Z3 S54 M roadster Image, BMW Z1, BMW M3 CSL, Z4M Coupe
ImageImage

User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 224

  Z3 roadster 1.9i
Contact:

Re: Oil selection.

Post by dazthephot » Tue 11 Feb, 2020 18:35

Gazza wrote:I’m not a brand specific person when it comes to oil.
If it meets the required spec then it’s ok with me.
I’ve seen various extra letters when looking for oil but have no idea what they mean. What’s the required spec for ours?


Sent from my iPhone using Tapatalk Pro

User avatar
Gazza
Site Admin
Joined: Tue 04 Oct, 2005 21:58
Posts: 9446

  M roadster S54
Location: Romford Essex

Re: Oil selection.

Post by Gazza » Wed 12 Feb, 2020 04:32

Look for LLO4
Gazza

"Understeer is when you hit the wall with the front of the car, oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall and torque is how far you take the wall with you"

Z3 S54 M roadster Image, BMW Z1, BMW M3 CSL, Z4M Coupe
ImageImage

User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 224

  Z3 roadster 1.9i
Contact:

Re: Oil selection.

Post by dazthephot » Wed 12 Feb, 2020 09:26

Gazza wrote:Look for LLO4
Nice one Image


Sent from my iPhone using Tapatalk Pro

woodsta888
Joined: Wed 25 May, 2011 10:26
Posts: 30

  Z3 roadster 2.0
Location: Exmouth

Re: Oil selection.

Post by woodsta888 » Thu 13 Feb, 2020 11:57

These guys are a recommend https://www.opieoils.co.uk/

The search function by vehicle will give a list of all the oils recommended for your vehicle from an oil specialist. Hard to beat their prices for premium oils also. They do packs including filters etc. Worth a look.

User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 224

  Z3 roadster 1.9i
Contact:

Re: Oil selection.

Post by dazthephot » Thu 13 Feb, 2020 14:25

Excellent, thank you.

Mike Fishwick
Joined: Fri 19 Jun, 2009 11:27
Posts: 2030

  Z3 roadster 2.8
Location: Daglan, France

Re: Oil selection.

Post by Mike Fishwick » Wed 19 Feb, 2020 13:37

I would avoid 'Longlife' oils, as they are invariably very thin at the cold end of their viscosity range - such as the popular 0W - 30 SAE type. In an old engine, or a badly-run in engine they can produce high oil consumption (such as the BMW 3 litre engine) and only have a benefit for those who lack mechanical sympathy, and want to blast down a motorway on a cold engine.

I would prefer to use a 10-40 synthetic, and change it every year, ignoring the Service Indicator lights, but resetting them every time the second light goes out.
A Z3 is not just for Christmas - it's for life!

User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 224

  Z3 roadster 1.9i
Contact:

Re: Oil selection.

Post by dazthephot » Wed 19 Feb, 2020 20:46

Mike Fishwick wrote:I would avoid 'Longlife' oils, as they are invariably very thin at the cold end of their viscosity range - such as the popular 0W - 30 SAE type. In an old engine, or a badly-run in engine they can produce high oil consumption (such as the BMW 3 litre engine) and only have a benefit for those who lack mechanical sympathy, and want to blast down a motorway on a cold engine.

I would prefer to use a 10-40 synthetic, and change it every year, ignoring the Service Indicator lights, but resetting them every time the second light goes out.
This is what I’ve gone for. I do try and change the oil at least once per year. I have a fair amount of sludge so I’ll be using a flush too.

https://www.carparts4less.co.uk/p/tripl ... -521776031


Sent from my iPhone using Tapatalk Pro

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest