Changing Oil in Yami 4 Stroke (150's) ? - The Hull Truth

miss_rach · 07-27-2007, 10:13 PM

Guys do you take the drain plug out or is it better to buy one of those tubes and pump/suck the oil out via the dip stick tube?

What's the cost of the pump equipment?

Cheers!

V20Ralph · 07-28-2007, 06:54 PM

I use the BigBoy topsider vac pump ( around $50) on my F150 and it works great. I always change the oil with the boat in the water so for me this is the way to go. When I refill I use 5 qts of Mobil 1 10-30 which gets it between the marks on the dipstick. Its important not to over fill these engines.

A1 Outboard · 07-29-2007, 01:12 AM

It is always best to warm up the motor and drain out the oil through the drain plug, but with a boat in the water it is necessary to use a pump. As long as good oil is used and is changed regularly after a warmup, there will be no sludge in the pan to worry about.

You can find drill powered pump out kits in the $20 range at marine accessory stores or even hardware stores.