Oil recomendation please

[devo357]

1986 BMW 325e 156k miles
will a nice 10-40 be fine or will the new euro 5-40 work?

Live in Los Angeles doesnt get very cold here this is my first old BMW.

Dean

 

[147_Grain]

Have you considered Mobil's 0W-40 that is available at Walmart for $22.47 in a 5-quart jug?

What are your driving habits and what has the pattern of maintenance been on the vehicle?

 

[devo357]

Completly rebuilt motor top end and bottom end. Will use to commute on the freeway about 50 miles a day.
0-40 im not sure if this car has been back speced to use 0-40

 

[dparm]

A 5w40 and 10w40 are roughly the same viscosity once warmed up. I would think that any modern 5w40 would work well in that motor; Rotella T6 5w40 will be a bit on the heavier side for a 5w40 (HTHS = 4.2) which puts it in line with many 10w40s.

Otherwise there is always Mobil 1 High Mileage 10w40.

 

[CATERHAM]

Originally Posted By: devo357
Completly rebuilt motor top end and bottom end. Will use to commute on the freeway about 50 miles a day.
0-40 im not sure if this car has been back speced to use 0-40

Yes I think you could use M1 0W-40 with confidence and I think it has been back spec'd to your MY BMW.
It's been back spec'd to my '86 Porsche and even older models.

 

[901Memphis]

It doesn't need to be back specd anyway a 0w40 is superior to a 10w40 in this case and most all. M1 is a fine choice.

 

[devo357]

Thanks guys I will give 0-40 a shot

 

[devo357]

Originally Posted By: CATERHAM
Originally Posted By: devo357
Completly rebuilt motor top end and bottom end. Will use to commute on the freeway about 50 miles a day.
0-40 im not sure if this car has been back speced to use 0-40

Yes I think you could use M1 0W-40 with confidence and I think it has been back spec'd to your MY BMW.
It's been back spec'd to my '86 Porsche and even older models.


Wow 74' Lotus! nice ride

 

[CATERHAM]

Thanks devo357, you've got some interesting rides yourself!