what can of oil grade i can use on my 1995 bmw 525i? [Archive] - Bimmerfest - BMW Forums

: what can of oil grade i can use on my 1995 bmw 525i?

09-06-2008, 08:20 PM
hi all kind you guys help me i just brought my 1995 bmw 525i with 121,000 miles.and i change the oil and put 5w 30 grade.is this oil grade good for my car or i need to change it?:dunno:.thanks in advance

09-06-2008, 10:55 PM
Fully Synthetic! It just depends on the weather conditions. Mobil1 is recommended. Earlier this month, for the first time I put in the 0w-40. I never thought I'd see it, I was curious... right now, I don't see what the big deal is... then again, I might have changed the oil a little too soon. I didn't feel any difference but I think before the odometer was acting up... I think it reads 2k more than it should be... easily. But fully synthetic, grading depends on the weather conditions... your in Florida... so its humid as hell, typically warm... 15w-30 sounds good.

attack eagle
09-07-2008, 04:11 AM
20w50 is the recommended weight. if you get lifter tick, then you need a thicker oil.
me i;d never run anything that thin, I run 20w50 year round

09-07-2008, 06:21 AM
I've been using Mobil1 15W-50 Extended Performance (good for 15,000 Kms) now for 3.5 years with absolutely no problems. Here's a site you can read more into the right oil for you.


09-07-2008, 09:12 AM
20-50 is the oil for older German made engines i used to change oil at my shop and all older Mercedes Audi's and BMW because of there high output should protect there engines with nice thick oil. i used it in my e28 and now in this baby, no problems i did try to use synthetic once and it started leaking i should have known better just thought i would try it out... you could use it if you make sure all your gaskets are new and everything is nice and tight.
but my lifters still got to noise with the synth..;.

09-07-2008, 10:55 PM
Like most here, I am a true believer in Synth. Just not in the E34, dadgum lifter noise. AE is right, go for the 20w50.

bimmer dot info
09-08-2008, 08:17 AM
There is a range of oils you can use. 15w40 works year round for me in Ohio. If you are hotter go thicker if you are colder thinner. If you want to take the easy route find some 0w40 or if they make it 0w50. It will work everywhere.

09-29-2008, 02:19 PM
20w50 is the recommended weight. if you get lifter tick, then you need a thicker oil.
me i;d never run anything that thin, I run 20w50 year round

I just got back from the States and brought back 6 quarts of 20W50 in my luggage. I finally got to verify what I suspected for months now. My lifter noise is gone! Great tip! Thanks!

09-29-2008, 06:13 PM
As my shop teacher used to say..."son, people a lot smarter than you and I wrote the owner's manual for a reason--use it". My 91 525 says 20W-50 is fine in the summer for Oregon-Washington weather. If it consistently goes below 20 degrees Fahrenheit, then I'd need a thinner oil, like 15W-40 or the like. I'd check my manual and err on the side of warm weather...whatever is consistent for your neck of the woods. And that's all I have to say about that.



09-30-2008, 07:13 PM
i talked to a bmw tech and he told me to add 10w40 in sunny florida climate all year round

attack eagle
09-30-2008, 11:55 PM
I'm probably a bit hotter than you, but only in the dead of winter (20-40s) can i use a 10w40 without lifter tick. so I just run good old castrol 20w50 like it was designed for. I might try 15w50 rottella diesel oil this winter though

10-01-2008, 07:29 AM
I have a 1995 525i. I have used mobil 10w40 in S. Florida. It is changed it every 8k. It has 173k. No issues. No lifter noise. I have never had to add between changes.

10-01-2008, 01:56 PM
I have a '92 535i with 64,000KM or nearly 40,000miles...practically a virgin...

I found it was hard to find 20-50 oil locally where I live, so I went with the 0-50 Castrol Synthetic. I cheaped out because the mobile1 was 20 dollars more. But I do get a bit of lifter tick...but I am absolutely anal and the tick drives me nuts. It's probably perfectly normal noise given the car has never been driven that much or hard but I will see how the slightly heavier oil works. I'll be ordering some so I definitely have it for the next change in a few months.