How often do you change your motor oil?

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11-01-2002 | 07:50 AM

Dean Ferry

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From: Merritt Is. Fl. USA

How often do you change your motor oil?

I have a 1999 HP500 with about 120 hours on it, I run Mobil 1 15-50 with a Mobil 1 oil filter and have been changing the oil every 25 hrs. We have a 20 minute idle to and from the dock/lift, and I'm concerned about all that idle time, hence I have been changing the oil so often. What do you guys think?
TGIF,
MD

11-01-2002 | 07:53 AM

CigDaze

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Should be okay with every 25 hours.
I also do it every 20-25 hours.

Another very important thing to remember is not only hours on the motor, but time as well.

Even if you only put like 10 hours in 3 months, you should change it anyway. Engine oil can get very acidy(corrosive) from combustion byproducts.

3 months is about the longest I'll leave oil in any engine.

11-01-2002 | 08:06 AM

Dean Ferry

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From: Merritt Is. Fl. USA

BD,
Thanks, the last time I changed it was in Aug, so it appears to be working out about right! What oil/filter do you use?
MD

11-01-2002 | 08:14 AM

CigDaze

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Dean,

I usually just end up using the Merc Tall Filter. I haven't experimented too much yet. It's just too convenient buying it at the marina.

11-01-2002 | 08:28 AM

Wally

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From: Chicago, IL

Changed oil every 20hrs or unless we were doing some unusually high rpm runs like a Poker Run or racing around burning gas at WOT all weekend! Oil was allways still just a couple shades darker then it was when clean but i still felt better changing it......till i switched to RedLine then i changed oil every 30-35 hrs and it was the same as the reg oil.....plus the $8/quart makes me stretch it out a little longer!

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11-01-2002 | 08:30 AM