[boostfreak]

I know this discussion is old in the 335i forums, but even with the factory oil cooler I get up to 250 degrees in Ohio, I cannot imagine what owners in Florida are seeing. 250 is way to high, even with a big turbo, my GTI never seen over 215 with a oem oil cooler. This is a big problem area in this car IMHO, even with the factory oil cooler. What does the oil temperture go to when you are modded?

[imaznumkay]

most 335i owners get oil temps around 250 range
i get 240-250 in south fl so i dont think its bad

[dpeterson]

i'm in ohio... mine hovers at 240, goes up to 250 if i'm getting on it for any amount of time.

dave

[DrGP]

Originally Posted by dpeterson

i'm in ohio... mine hovers at 240, goes up to 250 if i'm getting on it for any amount of time.

dave

Mine have been at 240 since the day I picked up the car. Once, on a day that was not very warm, the temp went up to 250 for no apparent reason. Back to no higher than 240 since then and all summer long.

[Bimmerista]

The N54 engine runs hotter than it really should.

From what I have read on this and other boards (bimmerfest), cylinders 2 and 6 are running hot and BMW engineers are trying to find out what causes this problem so that it can be resolved.

So let's hope this issue gets solved before I change my car, 'cause right now between the cooky fuel pumps and the hot cylinder heads, I'm sure I would like a 335 but I'm afraid.

[m4tte F82]

I get 240 consistently in Hawaii, even under hard driving.

[Bimmerista]

But even 240 is high. My A4 (1.8t) with a harder-working 4-cylinder with a larger single turbo did not run that high as the average temp. It was more around 200-215.

[dmboone25]

I know that the N54 seems to be running hot--but does the N52 in the 328i run hotter than expected as well?

[Bimmerista]

Good question - I really wish I could answer you but the dumkopfs at BMW AG (jk) decided that all I get to see is a dum warning light - otherwise, I got notin' !!! No gauge, no fun:mad:

Now, my 328 engine block is magnesium aloy, while the N54 is aluminium and schteel - also the N54 has Di (but not sure if this could affect cylinder operating temps). Otherwise, I don't know of other differences (except of course the twin-t)

[scollins]

Wow, I didn't know we had this many engineers on the forum that know all the ins and outs of motor design, engineering and operation, as well as all the molecular chemists that have intimate knowledge of synthetic oil properties. Obviously the loose screws at BMW AG, calling themselves engineers, must have bought their degrees online.

But hey, we've all read somewhere on the internet that cylinder such-and-such runs hot, and 240 is way too high for synthetic oil, and all limp modes are caused by missing oil coolers.....

Jesus, just sell the damn car, or don't buy it, if this shit keeps you up at night.....

[Miami Bimmer06]

I live in Miami, and I dont go passed 240

[gemini06m3]

You need a vented hood on these cars to relieve some heat.

[boostfreak]

Any which way I think we can all agree that 240 average is way too high for a car without any mods. What happens when you "chip/flash" it, exhaust ect.. then start running the piss out of it. I wouldn't be surprised if you don't get it into shut down mode because that happens at about 260.

I had mine on the dyno with three enourmous fans & after a couple of runs it was too hot & went into shut down mode. This is a problem, most cars can run 10-20 pulls without a problem

[RiXst3r]

Originally Posted by boostfreak

Any which way I think we can all agree that 240 average is way too high for a car without any mods. What happens when you "chip/flash" it, exhaust ect.. then start running the piss out of it. I wouldn't be surprised if you don't get it into shut down mode because that happens at about 260.

I had mine on the dyno with three enourmous fans & after a couple of runs it was too hot & went into shut down mode. This is a problem, most cars can run 10-20 pulls without a problem

I recently got an oil cooler retrofit...
now my car runs at 220-230... up to 250 if I push it hard for a while, but it drops back down rapidly when I let off for just a few seconds.

I am also in ohio... and I am not stock.
I have also been on a dyno, before my oil cooler, it would get too hot... now it is fine.

[DrGP]

Originally Posted by boostfreak

Any which way I think we can all agree that 240 average is way too high for a car without any mods. What happens when you "chip/flash" it, exhaust ect.. then start running the piss out of it. I wouldn't be surprised if you don't get it into shut down mode because that happens at about 260.

I had mine on the dyno with three enourmous fans & after a couple of runs it was too hot & went into shut down mode. This is a problem, most cars can run 10-20 pulls without a problem

I understand the car does not go into Limp Mode until 300 degrees.

[thealbert]

Originally Posted by DrGP

I understand the car does not go into Limp Mode until 300 degrees.

True, before I had my oil cooler retrofit, I've hit 280 before with no problems at all. Never hit 300 though. Now with my oil cooler, I've never gone past 250 even on hard driving and 100 degree weather outside.

[Noize]

I've never seen over 250, but I've yet to have it on track. I bet that could do it.

[David1]

I am at 240, not stock and do not get past 250 even at 140mph and hard driving. Even tracking them at the Performance Center, temps never went past 250.

[scollins]

Originally Posted by boostfreak

I had mine on the dyno with three enourmous fans & after a couple of runs it was too hot & went into shut down mode. This is a problem, most cars can run 10-20 pulls without a problem

I'm willing to bet you've got the Steptronic transmission, right? More limp modes in Steps have been caused by excessive COOLANT temps and not excessive oil temps. But since those early Steps didn't have oil coolers while the 6MTs did, and the oil temp gauge was nearing the at-the-time max of 300, everyone just assumed their limp modes were caused by high oil temps.

Did you come up with the "260 causes limp mode" from your dyno experience? If so, then that really means high coolant temps more likely caused your limp mode than high oil temps. Even with fans, I'm not sure the air flow over the radiator will duplicate the same "relative wind" as driving.

High oil temps do shorten the useful life of oil, even synthetic. I think that the danger isn't the 240-260 oil temp range, but those temps combined with a 15,000 oil change interval! I think the interval should be 5000 miles, which has been suggested by Blackstone Labs based on various oil analyses done by members here. That is when the TBN number has dropped to a marginal level.

[drexplode]

130C+ oil temp is a problem. I've observed this on a hot day in MI and in AZ while driving in 2nd gear for 30 mins in a 5500lb SUV for the pure reason to get coolant and oil temp at its max so we could test hot-restart/driveaway performance (WOT). Engine is 3.6L V6; NA with DI.

240F = 115C

Dont worry about it!

[M3 Piotr]

Originally Posted by dpeterson

i'm in ohio... mine hovers at 240, goes up to 250 if i'm getting on it for any amount of time.

dave

Mine is the same way, used to live in MD and did most highway driving never went over 240, and it stayed around 220-230. Now here in Monterey, CA doing only city (some hills) and car seem to run up to 250 when I get on it, and stays between 230-240 around city. Seems like it gets hotter in the city driving. I do have the oil cooler.

[Andrew@ET]

my 328 is way under the middle line around 200 or so.. only when i drive very hard it gets close to 240.