Right now, the oil has got 8500km's or about 5300mi @ the aforementioned driving cycle. The engine is a Toyota 2.2L 5S-FE. The fill is a blend of 20% Redline 10WT and the rest Petro-Canada Supreme Synthetic 0w30, a Gr III of reasonable quality. To offer a visual, oil on the dipstick is still transparent dark brown, meaning not opaque black. Before people cry 'sludge master', it must be disclosed that the crankcase ventilation capacity of the engine has been increased, and despite it's high mileage, is one of the cleanest 5S-FE's I've seen (in part due to consistent doping with Redline IMO). I've pushed as much as 10K KM's in past OCIs though never been tested, should I change anything?
What's a good OCI for 90% city?
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JHZR2
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Need to use UOA to determine. Depends upon how long the city drive is.
While I agree UOA would offer valuable insight, I'm kind of hesitant to drop the coin for one, reasoning that I can get a new jug of oil for the price. The city drives are not too short, some of them are about 10 minutes at the shortest, and say an hour at the longest. Excluding special runs, I'd say the car sees an hour of city twice a week, and the rest would be ~10 minute runs.. some weekend errands and shopping trips can be a combined hour on the road in smaller trips...
I'd be changing it @ severe schedule if it were me, especially in the cold, damp winter months when you might not boil off all the moisture.
You could do a uoa or use the uoa money to do an oil change .
I've wondered the same thing. I drive 5.3 miles to work and back again. Short commute. The engine gets fully hot (or so says the gauge)but I'm not too sure if its hot long enough to burn off any moisture. I used to do 6000 mi OCIs like this. But thinking of slashing that to about 3500-4000 mi given the winter months coming and the stop and go conditions. I never get above 50 MPH on the commute, and its 5.3 miles of stop and go. There are 9 traffic lights I have to negotiate on that commute.
4 to 5 months should be ok some run it one year with no problems
In the winter months, I'd do a 3K oci, in the summer, 5K oci.
Thanks for the advice fellas. Well,
Originally Posted By: shadow7
i can barely drive 3000 miles in 6 months( town driving,yes 6 months) so i change it every half year. Are we similar?
I'd say so. The car is mostly lady driven, and it's been about a year since the last change, and only 5300mi so far. You know what, I'm gonna put faith in the current fill and leave it in till about 6250mi/10,000kms... or change it before it gets really cold outside, whichever comes first. Thanks for the input fellas
Originally Posted By: shadow7
i can barely drive 3000 miles in 6 months( town driving,yes 6 months) so i change it every half year. Are we similar?
I'd say so. The car is mostly lady driven, and it's been about a year since the last change, and only 5300mi so far. You know what, I'm gonna put faith in the current fill and leave it in till about 6250mi/10,000kms... or change it before it gets really cold outside, whichever comes first. Thanks for the input fellas
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