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duke36 · 03-30-2019, 10:27 PM

Some of us use the K&N long air filter and an accessory oil filter which can help keep the engine oil clean. A detergent oil is recommended with the oil filter. There has been a lot of discussion about zinc removed from oil and the red bottled STP (not blue) to prevent issues with catalytic convertors, so I use Shell Rotella 15-40 and ZDDP additive.

03-30-2019, 10:27 PM	#14
duke36 Senior Member Join Date: Jun 2015 Posts: 1,414	Re: oil Some of us use the K&N long air filter and an accessory oil filter which can help keep the engine oil clean. A detergent oil is recommended with the oil filter. There has been a lot of discussion about zinc removed from oil and the red bottled STP (not blue) to prevent issues with catalytic convertors, so I use Shell Rotella 15-40 and ZDDP additive.