ggebhardt

The main thing that is important is not towing of pushing the tack near red line. I have owned many Lexus and to tell you the truth, I just drive them and not worry too much about break in. I have towed my jet ski during break in but it is so light I hardly knew it was there.
I would stick to what you have done in the past and enjoy!

kitlz

sderman, I had to drive about half that distance from my dealer. Went back roads the entire way, making one stop. Yeah, it took longer but isn't that the point when picking up a new car My trip was way more enjoyable than jumping on the highway. And the time flies by. Congrats on your new RX.

AL13NV8D3R

I know this is unrelated but when I was younger I bought a 2006 Ninja ZX10R 1000cc crotch rocket and from the very first day i was full throttle and redlining it all day and within 250 miles on the tach I took her on a track day going speeds well over 120+ mph and topping out at 159 MPH on the back straight. I owned that bike for 8 years and put about 50,000 miles on it before I sold it. I have rode coast to coast on that bike many times. I never had an issue with burning oil or premature failure.

To be fair i dont drive any of my cars as hard but i dont baby them either. I think you should be fine. Its a Japanese engineered vehicle and they have reliability as a priority. Drive it like you stole it.

toyotaman7

I don't think that is true anymore . The first time the engine stays is when the vehicle leaves assembly line to go to the yard and train it truck.

You can just vary your speed a bit our even stop once our twice.

aznkorboi

You have the list of things to follow from the manual right? This is what I followed:

Breaking in your new Lexus
To extend the life of the vehicle, observing the following precautions is recommended:
● For the first 200 miles (300 km):
Avoid sudden stops.
● For the first 500 miles (800 km):
Do not tow a trailer.
● For the first 1000 miles (1600 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in low gears.
• Do not drive at a constant speed for extended periods

coolsaber

Depends on the mfg of course. But during the last phase of assembly alot of automakers run the engine to optimize, and of course QC functionality. This has to include time on the rolling road, but sometimes in addition (random samples) are taken on a small road course.

I dont know of Lexus`s exact protocol as i have never been on a tour of their plant, but for sure have seen it on other mfgs lines

mcomer

This thread has been concentrating on the relatively new technology engine oil
and the wear of engine bearings etc. What is still comparatively old tech are the
brake pads. While we enjoy high tech ABS and traction control systems the actual work
is being done by pretty basic (asbestos free) friction pads against steel rotors.

Consider that last time you bought new leather soled shoes. Walking on carpet
was a bit dicey as you slipped and slid about. After a period of walking on various
surfaces, concrete, tile, wood and carpet the sole was scuffed and traction was
much improved. Brakes are similar, take it light if traffic permits and let the pads
scuff in before engaging track events (or equivalent street driving!)

coolsaber

Depends. I`d say its better to just give it the typical brake pad bed-in procedure most brake pad mfgs recommend. A couple hard stops without bringing the vehicle to a dead stop, and then normal braking again without hard stops

mcfancy

regardless of manual, i always do syn oil change at 5k....

DunWkg

I went in for the 15,000 mile checkup at a new to me dealership. The service advisor came really close to pressuring me to change oil. I asked if the RX had synthetic in it, he said yes. I said I'd stick to the recommended 10,000 mile intraval.

I'm sure Mother Lexus doesn't care, but to me his comment implied shorter engine life if I followed recommended intraval.

riwyle

I would wager if you drove two vehicles identically for 150,000 miles, changed the oil on on one every 5k and one 10k miles, and then completely stripped down the engines, a master mechanic would not be able to determine which is which.
So what reasons are there to change oil at 5k? I haven't seen a sludge problem since cars I owned in the 50's and early 60's.

coolsaber

Yup as long as the conditions are appropriate. I.e no heavy duty workloads

toyotaman7

Yes, all that great adds up to the mileage that was on your cat when you picked it up. Mine was 6 km which is about 4 miles. I had another 1594 km if break in period.
Guess what i did at,,km 1600? 😀😀😀😀😀😀

coolsaber

If the factory is hitting redline at true zero mileage.....hehehe have some fun during break-in.

Easman61

im taking delivery of new RX 350 350 miles from home on Saturday. I will keep this vehicle at least 10 years and I'd like to follow optional break in rules to maximize chances of engine longevity. Any thoughts on technique when faced with this king of a highway haul?
I know that I might be over thinking this - but just would like to exercise caution about not keeping at constant speeds initially.

Thiughts? Thanks in advance.