Engine tick on startup

[Philly X5]

03 4.4 So I had this problem for some time now, especially in the mornings. For the first few second the engine would tick like a diesel...
I used Mobil 0x40.
Few days ago I changed my oil to 5x30 and got a BMW oil filter from the dealer and no more ticking in the morning, even with the temperatures around 30F

Just FYI if someone has this problem too - change your oil and FILTER to BMW brand and that might help

[vinuneuro]

Many people have had problems with aftermarket oil filters, def use OEM. Oil doesn't matter, that M1 0W-40 you were using is very good.

[flyingmachine]

Originally Posted by Philly X5

03 4.4 So I had this problem for some time now, especially in the mornings. For the first few second the engine would tick like a diesel...
I used Mobil 0x40.
Few days ago I changed my oil to 5x30 and got a BMW oil filter from the dealer and no more ticking in the morning, even with the temperatures around 30F

Just FYI if someone has this problem too - change your oil and FILTER to BMW brand and that might help

I read somewhere that it's common that Mobile one causes vanos lifter noise. I always use OEM engine oil though.

[martinbaltes]

it seems to me bmw synthetic flows better than mobil 1 just by comparing how quickly a quart container empties when i have performed an oil change on my vehicles. but maybe iam just nuts.

[vinuneuro]

Technically speaking the M1 oil you were using is more synthetic than the BMW oil, since the M1 is a GroupIV oil v. the BMW Castrol oil which is GroupIII.

[X5rolls]

First I've heard of an oil filter having this type of affect. I'd be interested to know why.

I think the ticking changed because the oil was changed from 0 40 to 5 30.

Too low (thin or light) = Metal-to-metal contact (friction and wear), poor
sealing and increased oil consumption.

Too high (thick or heavy) = Increased fluid friction,
reduced energy efficiency, higher operating temperatures and equipment starting difficulties particularly at cold temperatures.

Sound right?