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[1stToyota]

Originally Posted by DerFlosser

Loren,
I have no question in my mind that Mini wants their oil changed at the longest possible intervals. That's because they want to get you into the dealership for service and bend you over with no lube. I have heard nightmare after nightmare over on NAM forums regarding dealerships absurds costs/pricing along with flat out denial of warranty work. If the Mini is turbocharged....I HIGHLY recommend increasing the OCI.

And with the Yaris being known for its fuel dilution problem, even prompting Amsoil to issue a warning about following Toyota's normal OCI replacement (5k miles) for their 25k mile rated oil filter, I sure wouldn't choose an OCI based on how other vehicles do.

[YarisOwnersDad]

Originally Posted by 1stToyota

And with the Yaris being known for its fuel dilution problem, even prompting Amsoil to issue a warning about following Toyota's normal OCI replacement (5k miles) for their 25k mile rated oil filter, I sure wouldn't choose an OCI based on how other vehicles do.

What fuel dilution problem? I'm fairly new to the Yaris, and I don't know what you are talking about. The Yaris is known to allow unburnt fuel to get into the crank case and dilute the oil?

For everyone offering suggestions for oil change intervals, please qualify your recommendations by stating the driving conditions that you are assuming.

Driving conditions would be a MAJOR factor in determining the optimum OCI, other things being equal. A car always driven on the highway is not going to need to have the oil changed as often as would be the case for a car that sees a lot of cold starts, short trips, and idling in traffic.

Tom

[1stToyota]

That's about the first time I've mentioned the fuel dilution problem here, I've read what other YW members (iirc, R2D2, Lazerdot... ) have stated over the last several months; use the search function. Concerning the problem, you'll discover Amsoil's statements about our engine and their Ea oil filter, etc... Thanks.

And, yes, like I stated before, I'm doing an UOA for my oil, driving conditions and my Yaris, instead of basing OCIs on results of how a different vehicle(s) using different oils, with different driving conditions did with their UOA.