Changing Oil

Jangocat · Post by **Jangocat** » November 2nd, 2015, 2:25 pm

Hi Group, I need to change the oil in our 1975 Santa Cruz. It has twin 302 Wauskesha Fords. Whats the best way to remove the oil from the engine? There is a plug in the pan, hose between the block and oil pressure sending unit that has a fitting in it or does it have to be sucked out the dipstick hole? The boat's on a trailer so there is no chance of a spill into the water. Thanks, Jim

Post by **waybomb** » November 2nd, 2015, 7:03 pm

I do my cars though the dipstick, and the Crusaders in the Carver.
On my two previous Carvers, the engines were Mercruiser with the dipsticks having threaded ends on them so a oil sucker simply screwed on like a garden hose.

I use a "Topsider". I warm the engines up first so the oil flows. While the oil is being sucked out, I change the oil filter and the two fuel filters (canister and carb bowl)

On the Cougar I have adapters on the oil pan for sucking out the oil from the bottom through a big hose. But those engines each hold 14 quarts!

If you can get to the bottom of the engines easy enough, you may want to install the drain plug / hose adapter - the oil suxck out much faster through the bigger hose.

Spencer Howard · Post by **Spencer Howard** » November 2nd, 2015, 7:10 pm

I have a 1970 Carver Monterey and a 1981 Carver Mariner. I pump the oil out manually through the dipsticks.

feeez · Post by **feeez** » November 6th, 2015, 11:04 pm

I also use the dipstick method on my 350 MAG MPI's. One of my Marina buddies has rigged up an oil pump from a 454 that he can hook up an electric drill to. That puppy will empty one of my engines in less that a minute if the oil is hot. I am really hoping to inherit it when retires from boating!!!

Lyndon670 · Post by **Lyndon670** » November 7th, 2015, 9:39 am

You can buy those vacuum pumps online at any automotive tool store for under $100. Bass Pro also sells them. Best boat tool going.

Post by **Viper** » November 7th, 2015, 11:27 pm

The 12 volt units on a pail are by far the best portable systems IMO. Will drain a warm big block in about a minute. It's compact, clean, self contained and can be used in reverse to fill engines from a 5 gallon pail. This is handy for those applications that have very little clearance between the top of the engine and the underside of the salon floor. http://www.westmarine.com/buy/jabsco--portaquick-12v-oil-changer--372128

Changing Oil

Changing Oil

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