#Semi-synthetic
Piston Slap: Seeing the Forester for the Trees?
Jim writes:
Hi,
I hope you are well. I have several questions regarding my 2011 Forester (5 speed):
a) I drive 8 to 10K annually and change the 5w-20 every 6 months. Is this sufficient?
b) Subaru keeps sending me extended warranty offers. This tells me that I likely don’t need it. What do you think? My favorite moment when purchasing the Forester: The F & I rep mentioning “If people want to drive around without the extended warranty, it is not my problem.”

Piston Slap: Always Trust, But Verify
Patrick writes:
Okay, I have a question. Strictly follow the manufacturer’s suggested maintenance schedule, or only perform demand maintenance?

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