carchitect

iTrader: (1)

Lexus calls 30k service intervals on their rear end gear oil service intervals. I call BS on that. Its just another way for most manufacturers are stretching their maintanance intervals.

Granted, I've done a couple of HPDE events and drive fairly spiritedly on the street. I was concerned about the gear oil's condition. I decided to change it. I purchased 2 qts. of Cartrol Syntec 75W90 gear oil and replaced it today. Of course I won't "feel" any difference in it. But I knew it needed it. The magnet was full of crap as expected since the gears are meshing (breaking in) and the oil is being rapidly worn out as the particles are becoming suspended in it. The oil was thin to where it felt less than a 50W. I'd say the first service interval shouldn't be any more than 15K. I know a lot of the guys on this board are concerned about the maintanance and longevity of their vehicles and this could be valuable info for those who would like to keep their wear levels reduced as much as possible.

-Joe

maxnix

In TX, I prefer the 75W-140 synthetics.

iSuxeL

iTrader: (21)

I'm taking a guess that every state should use a different weight? What would you suggest for FL?

iKenn

iTrader: (1)

Orange Juice, you are in the sunshine state. haha

back on topic, i thought the tranny was sealed, or am i thinking of another kind of oil?

t0e

iTrader: (1)

differential oil....

Byprodrive

iTrader: (1)

I think most manufacturers recomend change at 100,000 miles

carchitect

iTrader: (1)

Lexus recommends the trans service @ 100K and diff @ 30K. I'm planning on sending an ATF sample back to Lexus @ 50K.

jns350

iTrader: (7)

With most manufacturers suggesting higher intervals for service. It is usally the purpose of being more eco friendly. I know, I know, yea right... but the use of synthetic oils allows more infrequent services than an underlying sabotage by Lexus. Rear axle oil has no combustion contamination to degrade the fluid in the rear end. Thus allows more infrequent services. If the vehicle rear end undergoes towing (excessive heat,breakdown in antifoaming agents) or submerge under water (ie: trailers backing into water) then water can get in to vent system. Then the MFG suggest a more frequent exchange. Bottom line is..... to each their own! We all feel more confortable servicing the fluids much sooner than the MFG suggest..as with most manuels...it is only a guideline not a standard.

nabbun

i like knowing i have clean oil and fluid in my car.

IS35O

What weight oil does it come with from the factory? Synthetic or regular? Anything better then factory for the CT area? I'm coming up on my 30k soon

Kurtz

iTrader: (1)

How does lexus recommend trans service at 100k when the system is sealed?

Even dropping the pan only gets like 1.5 out of 9 quarts out of it...and there's no place to hook a fluid exchanger to.

eric_r_ho

iTrader: (9)

They have machines at the dealer where you pump upwards into the transmission oil pan through a quick-disconnect fitting..the oil pan does have a drain bolt on it..

Nowadays most cars are "lifetime" fill for the differentials..I'm pretty sure ours are too

Koz

Put this in and forget about it!

http://www.amsoil.com/storefront/svg.aspx

Koz

t0e

iTrader: (1)

We cant be talking about Tranny oil? are we?

I'v heard you should just leave it alone, till it breaks, and call it a day.

Otherwise, by replacing the oil, you can actually cause damage earlier, to the transmission.

This is just what a mechanic told me, that really takes car of his cars....

He said, just wait till it break and buy a new one?

Im still not sure about it.

Kurtz

iTrader: (1)

Like I just explained, the oil pan only lets you remove 1.5 out of 9 quarts. If you take it off entirely even.

There's also no place to hook up a conventional fluid exchange machine because there's no cooling lines carrying transmission fluid.

This thread discusses at considerable length why it's physically impossible to change the transmission fluid.

https://www.clublexus.com/forums/sho...d.php?t=236728

It's mostly on pages 3-5 that it shows the technical diagrams, including how much fluid you can get out doing various services... none of them (including replacing the torque converter) can get more than 1/8th-1/2 of the fluid out.