Do a search for spark plug change on here. Lots and Lots of info.

 

I think Viktor G Automotive has it on his YT channel.

 

Here is a link to the main Thread on 4th GEN RX plugs :
Spark plugs change on 4th gen RX? - ClubLexus - Lexus Forum Discussion

Here is a link to a video on the process from The Car Care Nut :

It's pretty easy and you don't have to remove the wipers/cowling.

 

What I gather from this is: Change spark plugs at 60K then every 120K since all original manufacturer warranties will be expired by then. Plugs are good for 120K and the only reason to change at 60K is to keep a 8/80 emissions warranty valid (I will hit 80K long before 8 years). Note: I have the 4th Gen RX350 with the new service interval of 60K on the spark plugs.

 

I would change it every 60k, I haven't felt an instance of misfire since I changed spark plugs at around 70k, currently at 81k

 

The thing is, the V6 in the RX is the exact same one in the Toyota RAV. Toyota recommends plug change at 120k, Lexus at 60k. Apparently the only reason is emissions. I've got 105k on my RAV V6 and it runs like a top. Of course, better stick with 60k on the RX if it's under warranty.

 

I think you're mistaken the V6(2GR FKS) in the 4th gen RX350 for the V6(2GR-FE) in the 3rd gen RX350, the 3rd gen RX350 also have 120k service intervals for spark plugs.

 

You're right! Sorry about that.

 

Not a great strategy for such cheap parts. Plugs have precise gaps that change from firing and edges become rounder, not to mention carbon build-up. After that, things get hard to start and gas mileage goes down.

 

So based on this is it 120,000 miles for a 2018 RX350 with a V6 ?

 

Refer to post #122.

 

I've heard that plugs left in an engine over a long period of time can seize, making them difficult or impossible to remove. Also, over torquing plugs is a big mistake. Another reason why you shouldn't forget them.

 

Did the 60k service today, oil, filters, brake fluid and new plugs. Followed CarNuts video that’s referenced and it was pretty smooth. Took me about 2.5 hours going fairly slowly and taking pics.

Anyone can do it, just need Al ittle patience and not being afraid to dig in and remove the manifold.

Dealer wanted $2k for the 60k service- F that.
I went to dealer afterwards with the old parts and asked them to document it as service completed, but they won’t do it. They said just to keep receipts and pics of the odometer. I track all car maintenance in an xls sheet, so all good .

I already did the diff oils at 36k and trans fluid change at 42k. Keep fluids clean and car is happy.

I did buy the metal oil filter housing and swapped it in replacing the factory plastic one. ( new part 15620-31060) .

 

I likewise just did spark plug change. Car is at 63413 miles.

I followed Viktor's video along with CCN for the one trick of removing the back right stud.

Go slow and take your time....double check everything. Took just over 2 hours. Also cleaned throttle body and MAF while I was in there.

I found that the only tricky part was working on the rear center plug. Pretty much blind, but if you take your time everything makes sense. A couple of the connectors where tough to remove, but not bad. Cost me under $100 for plugs and gaskets versus what the dealerships want.

I think that the plugs look pretty good and sure that I could have waited, but today was a good garage day.





Notice the small N on end of plug showing that it is factory plug.

 

Thank you for sharing the pictures as I had requested.