Originally Posted By: tig1
Originally Posted By: addyguy
From what I've seen here, Toyota's 'seem' to do better on Mobil 1 oils. Yes, that's a vague observation offered w/o much proof, but I think it stands.
So I'd go Mobil 1 Extended Performance 10w30 for 10k.
My daughters 1999 RX 300 was a supposed sludger, but we did 10K OCIs with Mobil 1 10w30 with very good success. She sold it with 90K to her friend and it's still going strong. More silly and bias stuff.
And this is relevant how?
To get back to facts, here is one more on topic:
There is no TSB or Recall for the Corolla and sludge. Yet in less than 96,000 km (the mileage on it when I bought it), this engine developed a severe case of sludge that I am still cleaning out. This in spite of the original owner doing all of the following (and I base this on having every single service invoice for the car as the original owner kept immaculate documentation, to the point of OCD):
- it was serviced for the first 8 years of its life by the dealer, as per their standard service schedule. This was done twice every year (spring and fall). For every one of those visits, oem oil & filter were used. This is dealer service far in excess of what most use, as most owners stop going to the dealer for routine maintenance after the warranty is up because they save considerable money by doing so.
- with only one exception, the oil was always changed between 3-5,000 miles - more frequently than Toyota's standard service schedule calls for, and more frequently than what many advocate on BITOG. In the one exception she went 7,000 miles between changes - again less than what many on BITOG advocate.
- the last two years she stuck to 3-5k OCIs, which were done elsewhere but always involved both an oil & filter change. The oils used were API SM which exceeds the SJ requirement on the cap and in the owner's manual.
Yet in spite of the above, it developed sludge. This is a real world example that is parked in my driveway right now and uses a 1ZZ-FE engine similar to what the OP is using.
You reply to real world, real life examples (based on actual experience with this engine and research on it specifically motivated by owning one) with anecdotal data that has no relevance. Nobody in this thread is knocking Mobil, yet you reply as if people in this thread are attacking XOM by stating our actual experience based POV based on owning 1ZZ-FEs.
Your daughter's experience with her RX 300 has no relevance and proves nothing as far as the points concerning the 1ZZ-FE go.
-Spyder