Switched to 5-30 Mobil 1

[trent]

You know, the more I read this, the more I get irritated. Who the fuck are you to offer oil advice Ken? Will you please specifically tell me how mileage plays into oil thickness? Can you point out why 20W-50 is "unnecessarily thick?" What is your information? Do you have more experience than on your wonderful M10?

Please let me know, I might start calling you for technical information.

[bmwm3n528]

You know, the more I read this, the more I get irritated. Who the fuck are you to offer oil advice Ken? Will you please specifically tell me how mileage plays into oil thickness? Can you point out why 20W-50 is "unnecessarily thick?" What is your information? Do you have more experience than on your wonderful M10?

Please let me know, I might start calling you for technical information.

Somebody got Trent fired up. :o

[e30 gangsta]

i also run 20w - 50. Im in miami.

[arsevader]

You know, the more I read this, the more I get irritated. Who the fuck are you to offer oil advice Ken? Will you please specifically tell me how mileage plays into oil thickness? Can you point out why 20W-50 is "unnecessarily thick?" What is your information? Do you have more experience than on your wonderful M10?

Please let me know, I might start calling you for technical information.

I agree.

I would argue that 10w-30 is actually too thin for these motors (M20). And anyways if you check your owners manual it tells you right there that 10w-30 is only good if the temp is -30 C to 5 C.

There is so much crap out there on what oil to use but if people would only read the fucking manual.

I use 15W-50 in the summer and 5W-50 in the winter. Works great.

James

[pig4bill]

Look up the Mobil 1 website. They recommend which weights for which engines. 5w-30 is too thin.

According to the info published by most oil vendors 20w-50 is perfect for warm climates, short of using something like Redline or Amsoil. I wish I could get it in the big 5 quart jugs.

[blunttech]

but ken heard it somewhere else on the interweb. it has to be right

[arsevader]

but ken heard it somewhere else on the interweb. it has to be right

Haha.

But seriously, people need to learn what the numbers mean.

The first number is important for cold starting. Therefore I use a 5W-50 in the winter beacause it flows like a 5 weight oil when cold and I use a 15W-50 in the summer because temperatures are warmer.

The second number is important for operating temperature protection therefore you need at least 40 in the second number. 10W-30 and 5W-30 are going provide the same level of protection when warm....crap.

James

[nickmp0wer]

mobil says i should use 10w-30. Is this right? could i switch to synthetic at 135000 miles?

[parkerbink]

Then by that logic, living where it never gets below 60 why use multi weight oil? I should just use 40 right?

[trent]

Then by that logic, living where it never gets below 60 why use multi weight oil? I should just use 40 right?

I know people that run straight 50W in nice weather like yours.

[Sean]

Mobil 1 only offers so many options.

I just run 15w-50 synthetic year round, since I would hate to have my car be real loud.

5w-30 is way too thin. These M20's like to be using thick oil.

I don't think Mobil 1 makes a 10w-40 or 10w-30, do they? If they did, that'd be what I use.

You'll be fine for now. I ran 5w-30, before I knew that M20s liked thicker oil, and changed on my next oil change.

[arsevader]

Mobil 1 only offers so many options.

I just run 15w-50 synthetic year round, since I would hate to have my car be real loud.

I don't think Mobil 1 makes a 10w-40 or 10w-30, do they? If they did, that'd be what I use.

They make a 10w-30 but that is just as thin at operating temp as a 5w-30.

The second number is the important one people. You need at least 40 in the second number.

James

[nickmp0wer]

when should 30 40 or 50 be used?

[arsevader]

when should 30 40 or 50 be used?

According to the BMW manual 10w-30 is only good up to 5 degrees celcius.

I use a 5W-50 synthetic in the Winter and I use Mobil 1 15W-50 in the summer. Here in my area we experience -25c weather in the winter and +40c in the summer so these oils offer a good range.

Really you should use the most viscous oil you can get away with.

James

[bmwm3n528]

when should 30 40 or 50 be used?

According to the BMW manual 10w-30 is only good up to 5 degrees celcius.

According to BMW, you can go 10,000 miles on the same oil/filter.