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Ernest72 · 09-23-2017, 06:12 PM

Fuel dilution can happen over time, small amounts of fuel get into oil and you can lose viscosity. I would change every year for sure. Even every 6 months cost nothing.

09-23-2017, 06:12 PM	#7
Ernest72 Senior Member Join Date: Jul 2016 Drives: 16 Silver BRZ, 04 Silver WRX wagon Location: Rockland county, NY Posts: 1,429 Thanks: 186 Thanked 776 Times in 446 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Fuel dilution can happen over time, small amounts of fuel get into oil and you can lose viscosity. I would change every year for sure. Even every 6 months cost nothing.