Yesterday, I did a back-to-back comparison of 328i and 335i sedans. During that exercise, the salesman offhandedly mentioned that BMW had added an oil cooler to the 335i's built after December. Anyone know what prompted that modification?

Thanks

Lots of threads on here about it. For the most part if you read through them you'll see people complaining how the needle for oil temp didn't point to center on the old gauges, giving the impression that the temp was high. It's been reported that the gauge was modified, the temps were shifted such that the needle would be more in the center during normal operation.

You'll also see people worried that the temp IS high, but no actual issues reported aside from a few (2 reports I've seen, from the same individual) overheats when taking the car to track. The car itself is designed to protect itself, it lowers engine output at 298f which is what the guys at the track saw.

Everyone else on those threads is seeing 240-250f oil temp during normal use and mistaking it for coolant temps and worried they're on the verge of boiling their antifreeze. Most of the complaints are simply user concern.

The oil coolers used to only come on one specific setup (can't remember, think it was manuals with sport package), now as of March they come on any car that has sport package, I believe. BMWUSA and dealers had a lot of the above mentioned people calling in, demanding oil coolers like the specific package had, so they broadened the vehicle scope.

Motor Trend was also accusing this as the reason for the G37 coming out on top in a comparo...

Would love to see and oil cooled 335i in the same comparo.

http://forums.nicoclub.com/zerothread/260025

Yeah, it was the reason. The 335i won in the tests, but they ran into the heat issue when pushing the cars hard so the G37 won by default.

It's strange, because this is for the Aug MotorTrend after the oil coolers came standard on all sport packages, so you'd think BMW would provide it's best equipped vehicle....

Oh wait. Infiniti provided the 335i.

Oh wait. Infiniti provided the 335i.

And that folks, is called hitting the nail on the head!

But to the Nissan folks, we're making excuses! :mad

Who wants to bet that the only reason Nissan produced a G37 (not a newer G35) is to confuse the consumer into thinking it is more powerful than the 335 (37 being > 35). On the same note, the 335 label by BMW is not an accident (i.e. why not 330T or 330 turbo). Those Automotive marketing folks should be dragged by their feet across town using their manufacturers cars (ala western movies).

Motor Trend was also accusing this as the reason for the G37 coming out on top in a comparo...

Would love to see and oil cooled 335i in the same comparo.

http://forums.nicoclub.com/zerothread/260025
R&T says:
"Even with its new stroked VQ 3.7-liter engine featuring Variable Valve Event and Lift (VVEL) that is preliminarily rated at 330 bhp, the G couldn’t match the pace of the turbocharged 335i."

"The combatants in the around-$40,000 luxury sports-coupe segment are sensational, if few. But the BMW 335i still rates as king of the hill"

Check it out at http://www.roadandtrack.com/article.asp?section_id=36&article_id=5495

Good find... This is a nice read, if a little short on information. Reading on to the Infiniti G37S, it's nice to know that BMW isn't the only one with an occasional issue... At least road and track didn't hold it against either of them ;-)
Can the 2008 Infiniti G37S best the king-of-the-sports-coupe-hill, a BMW 335i? It’s hard to tell when the BMW’s power-steering pump seizes and throws the serpentine belt while on the way to our comparison test. Gee, I’m glad I’m driving the Infiniti.


The following afternoon, after the BMW had been repaired, I’m in our early production model (No. 33) G37S when the clutch pedal goes to the floor — and doesn’t return. After some sporadic cursing I notice my colleague Mr. Hall looks glad to be driving the BMW — karma sucks.

Who wants to bet that the only reason Nissan produced a G37 (not a newer G35) is to confuse the consumer into thinking it is more powerful than the 335 (37 being > 35). On the same note, the 335 label by BMW is not an accident (i.e. why not 330T or 330 turbo). Those Automotive marketing folks should be dragged by their feet across town using their manufacturers cars (ala western movies).

I'm no Infiniti lover but if BMW put a 3.7 ltr engine in a car they would probably call in a 337. The sedan is still a G35 due to its 3.5 ltr and the coupe a G37 for its 3.7 ltr.

In fact it is BMW who played the numbers game and went away from their normal numbering logic. The 335 indicates a 3.5 ltr engine in BMW naming speak which we all know it isn't. A 330tti would have been more accurate.

I'm no Infiniti lover but if BMW put a 3.7 ltr engine in a car they would probably call in a 337. The sedan is still a G35 due to its 3.5 ltr and the coupe a G37 for its 3.7 ltr.

In fact it is BMW who played the numbers game and went away from their normal numbering logic. The 335 indicates a 3.5 ltr engine in BMW naming speak which we all know it isn't. A 330tti would have been more accurate.
You are repeating what I just said. Read it over again carefully. All I am saying is Nissan went to a 3.7 engine so that its marketing machine will highlight that G37 > 335. If BMW didn't produce a 335, I think they would have just tweaked the existing 3.5 engine to get a bit more hp/torque.