Re:Oil changes, safety recalls, and software updates
by rypskar on Wednesday June 14, 2017 @04:28AM
(#14551386)
How would changing oil every 2 000 km be a problem? Modern oil should last 10x that long without any problem. I am used to having recommendations for changing oil once a year or every 15k km depending on what comes first. I remember recommendations to change 2 times a year 15-20 years ago because it back then was more normal to have different viscosity in summer and winter
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Re:Oil changes, safety recalls, and software updates
by jhayward on Wednesday June 14, 2017 @05:22AM
(#14551530)
The sticky sludge that GP refers to is for the most part an emulsion of water, produced by combustion and/or from ambient humidity, and oil. If an engine is not run frequently or is used only for short intervals the water isn't driven off by engine heat. Engines that aren't run much must be maintained based on elapsed time, not duration of use, due to factors such as this.
The author's vehicle is a prime sludge candidate, although not as bad as people who go years w/o changes.
Loss of viscosity is a wholly separate form of degradation which along with accumulated Ph changes is responsible for the "every N miles" recommendation.
Re:Oil changes, safety recalls, and software updates
by King-Aaron on Thursday June 15, 2017 @12:11AM
(#14557895)
Spot on
Re:Oil changes, safety recalls, and software updates
by LoSboccacc on Wednesday June 14, 2017 @04:50AM
(#14551443)
Depends on oil. Many cars still run on semi-synth and those require the 15k/1yr routine, full synth can use longer kms and two years, or every year if you do under 5kkm/year