Martin8 said:Ah, Dingo brings up another good point: are people switching to synthetic on the first oil change or are they waiting one more cycle?
dingo said:My first oil change was around 1400. I had the stealer do it to loosen that factory oil filter. Apparently, Toyota uses gorillas to install them with like a thousand pounds of torque. Filled with dino oil. Did all subsequent oil changes myself and switching to Mobil 1 syn next change and installing Fumoto valve!![]()
Yeah, you're right. But after reviewing many UOAs over at BITOG, I (and some others) have determined that early and often changes up front will result in lower break-in wear metals being present in the first few UOAs. I am not saying it means anything, but I believe, on average, a UOA from my engine at 10,000 miles MAY show less wear metals than a UOA from an identical engine that had fewer oil changes at 10K miles (all other things being equal - which they never are). The early and often changes do appear to flush the wear metals out more quickly.NCSCOTT said:Wow!! 1000, 3000, 5000????? Seems like overkill to me. But to each thier own.
desibhar said:Read the owners manual: its your friend
5000 for me
Baba Booey said:Your engine will likely last as long as mine will - perhaps longer. However, if by some slight chance, changing the oil early and often would result in slightly better break-in, do you believe Toyota would recommend it in the owner's manual?
Imagine if Toyota asked their new owners to change their oil four or five times within the first 10,000 miles, while Honda is recommending 10,000 mile oil changes with conventional oil on some of their new vehicles. The cost of ownership for the Toyota would be too high in comparison.
Following the owner's manual is sound advice, but it, like a lot of other things, is probably based on some compromise between what is best mechanically and what is acceptable to owners financially and convenience-wise.
For example, the 2006 owner's manual indicates that the transmission fluid never needs to be changed unless you use the vehicle for towing. Maybe the fluid would last me 300K miles, but I am not going to take the chance. I'll spend the money every three or four years and have it replaced just in case.
desibhar said:
If there was a problem with the way the car performs because of the intervals Toyota has for performing service, you better believe someone would complain and threaten a lawsuit. I'm sure Toyota would rather err on the side of safety to cover their ass. It gives them no benefit to make the oil change interval too long. They have a solid reputation to protect.
Baba Booey said:First, let me start by saying that I do not disagree with anything you have said. However, I believe Toyota did have a 7,500 mile "normal" service OCI on many of their vehicles in the past. Then, it became apparent that some of their engines were prone to sludge if not maintained properly, so I believe they dialed back their "normal" service OCIs to 5,000 miles on most/all of their vehicles.