[chris82]

At my last oil change I had 5W-40 put in (don't know the brand), and 7000 miles later I am getting a "+1qt" light on my dash, I don't have 5W-40 but I have some Mobile 1 synthetic 5W-30. I'm planning on getting an oil change within the next week, but in the meantime is it alright to just add a half quart of this 5W-30 (Mobile 1 fully synthetic)? This will only be in the car for about a week until I can get it changed out.

[colin_e90]

You'll be good, just did this myself recently except for me I'm not doing an oil change for some time and also I filled with royal purple last oil change for experiment purposes

[Needbmwpartzz]

It's ok!

[Wolf 335]

2,907 posts under your belt, various mods done to your car, high rep count which tells me you're a contributing member and you don't know what oil is in your car and whether or not its ok to top up with another???

You kidding with us right?

Your answer better be yes.

[chris82]

Originally Posted by Wolf 335

2,907 posts under your belt, various mods done to your car, high rep count which tells me you're a contributing member and you don't know what oil is in your car and whether or not its ok to top up with another???

You kidding with us right?

Your answer better be yes.

[chris82]

Originally Posted by Wolf 335

2,907 posts under your belt, various mods done to your car, high rep count which tells me you're a contributing member and you don't know what oil is in your car and whether or not its ok to top up with another???

You kidding with us right?

Your answer better be yes.

I know what oil is in it, but just not if its okay to use 2 different kinds/brands

[Wolf 335]

I'm just messing with you, its all good.

[FUKTHISFORUM]

No, it causes Erectile Disfunction. Be strong.

[raleighBahn]

In principle, no.

The real question is 1) why did it burn thru a quart in just 7k miles, or 2) can you really believe that message given it is based on a sensor reading?

Either you are leaking a fair amount of oil, which is a concern - or your oil level is fine and the sensor(s) are flaking out - which will have you overfilling - equally a concern.

I would put the car up on ramps and start looking for leaks top and bottom. Else, drain the oil and measure it. Having no dipstick is an insanity we have to live with, unfortunately.

[supergoat]

Oil is oil for the most part. I top mine off with whatever is nearby. Usually the generic 10w-30 that I use in the Miata. Works fine.

[fravel]

I use OEM oil usually, and I try to keep a quart handy in my garage in case it's needed, but I got caught a couple hundred miles from home a few weeks ago and my car asked for a quart. I snagged some Mobil 1 and dumped it in. I didn't notice any adverse affects, but the car was also due for an oil change shortly after, so it wasn't in there long. I'm not worried about it.

So long as it's synthetic and the same weight/viscosity as what you've already got, I'm sure you'll be fine.

[matteblue3er]

Originally Posted by raleighBahn

In principle, no.

The real question is 1) why did it burn thru a quart in just 7k miles, or 2) can you really believe that message given it is based on a sensor reading?

Either you are leaking a fair amount of oil, which is a concern - or your oil level is fine and the sensor(s) are flaking out - which will have you overfilling - equally a concern.

I would put the car up on ramps and start looking for leaks top and bottom. Else, drain the oil and measure it. Having no dipstick is an insanity we have to live with, unfortunately.

Burning through a quart in that mileage range on a higher mileage BMW is common. Nothing to worry about.

[Mavus]

Originally Posted by chris82

At my last oil change I had 5W-40 put in (don't know the brand), and 7000 miles later I am getting a "+1qt" light on my dash, I don't have 5W-40 but I have some Mobile 1 synthetic 5W-30. I'm planning on getting an oil change within the next week, but in the meantime is it alright to just add a half quart of this 5W-30 (Mobile 1 fully synthetic)? This will only be in the car for about a week until I can get it changed out.

yes it's fine

I add 1 qt every 5k mi

[NiNeTyOne]

Why is this not in general e90? How is mixing oil a mod?

[Dan Bilzerian]

Originally Posted by Smooth 330i

yes it's fine

I add 1 qt every 5k mi

I feel like I add a qt every 3k lol

[chris82]

thanks everyone!

Originally Posted by raleighBahn

In principle, no.

The real question is 1) why did it burn thru a quart in just 7k miles, or 2) can you really believe that message given it is based on a sensor reading?

Either you are leaking a fair amount of oil, which is a concern - or your oil level is fine and the sensor(s) are flaking out - which will have you overfilling - equally a concern.

I would put the car up on ramps and start looking for leaks top and bottom. Else, drain the oil and measure it. Having no dipstick is an insanity we have to live with, unfortunately.

Well, I added 2/3 a quart and it went up to the "max" line, then settled half way between that and the middle line, I think it's good.

[Kirkies328]

Originally Posted by colin_e90

You'll be good, just did this myself recently except for me I'm not doing an oil change for some time and also I filled with royal purple last oil change for experiment purposes

Royal purple for the win! Only stuff i use in my car. I use 6qts of royal purple 5w-30 and 1 qt of lucas oil full sythetic oil stabilizer

[bimmerquick43321]

Originally Posted by colin_e90

You'll be good, just did this myself recently except for me I'm not doing an oil change for some time and also I filled with royal purple last oil change for experiment purposes

Did you notice any difference with royal purple, like is oil temperature lower? Wanted to try it, however I've read mixed reviews about it...

[supergoat]

Originally Posted by NiNeTyOne

How is mixing oil a mod?

You're modifying the oil. JEEZ!

[puppydax]

Royal Purple is one of the worst oils I've ever used/tested in my last 3 cars. Sheared MUCH quicker than Mobil1 when going through multiple passes. I mean, it might be different for NA, but I only use Mobil1 and recently just switched to Shell Rotella T6. Rotella hardly lost any viscosity through multiple passes.

[NiNeTyOne]

Originally Posted by puppydax

Royal Purple is one of the worst oils I've ever used/tested in my last 3 cars. Sheared MUCH quicker than Mobil1 when going through multiple passes. I mean, it might be different for NA, but I only use Mobil1 and recently just switched to Shell Rotella T6. Rotella hardly lost any viscosity through multiple passes.

..and compared to my Blackstone reports on LiquiMoly the reports I got back on Mobil 1 looked like the report I saw after engine break in. So if you're seeing RP reports that are that bad compared to M1, sheesh...

The T6 is actually pretty good stuff at half the price of LiquiMoly but I saw a lot more build up in the heads than I like with T6, where LiquiMoly has stayed beautifully clean with just a hint of gold on the castings in the head.

At 250k on my built twin turbo the main bearings looked like they has 25k on them, and that car ran LiquiMoly its entire life. I'm pretty sold on it.

[gunnerxq]

Originally Posted by NiNeTyOne

..and compared to my Blackstone reports on LiquiMoly the reports I got back on Mobil 1 looked like the report I saw after engine break in. So if you're seeing RP reports that are that bad compared to M1, sheesh...

The T6 is actually pretty good stuff at half the price of LiquiMoly but I saw a lot more build up in the heads than I like with T6, where LiquiMoly has stayed beautifully clean with just a hint of gold on the castings in the head.

At 250k on my built twin turbo the main bearings looked like they has 25k on them, and that car ran LiquiMoly its entire life. I'm pretty sold on it.

What about pennzoil and their new natural gas treated oil?