Lube Oil Polisher

[Target9000]

Originally Posted by perchance

If you roll the engine over for ten to fifteen seconds with the start disabled you can accomplish virtually the same effect as using a pre oiler.

Those parts would still be rubbing without proper lubrication during the roll over wouldn't they?

[perchance]

Yes but not to the same extent. You will pump some oil into the crank, cam and rod bearings but you won't get the coverage you would get with a preoiler. I guess it boils down some oil is better than none.

[perchance]

Originally Posted by Randal Johnson

It has been my understanding that engine oils do not wear out. The fact that I replace 6 quarts of a 20 quart system every time I change my GCF is more than enough to replace any additives lost. I have over 2,000 hours on my JD 4045T and every oil analysis has come back good. Below is one of many web sites that promote the use of bypass filters.
By-Pass Oil Filtration

Also this one: Gulf Coast Filters, Inc. Specializing in Bypass Oil filters, Fuel filters, Hydraulic filters and Custom filtering

You are right, oil doesn't wear out. It breaks down.

[Shanaly]

how would i disable start?

[Shanaly]

big thanks to each sailor for such practical and precise info - ~

[Dockhead]

Ask five sailors and you'll get six different opinions . . .

For whatever (little) it may be worth --

I change oil and filter on my Yanmar every 100 hours (the genset, too). I have always changed oil and filter on my cars at 3000 miles. Diesels put a lot of cr*p into the lube oil and it cannot possibly hurt to change it more often than the 250 hours recommended by the manufacturer.

For a heavy over-the-road truck which is run a jillion miles a year, you might think hard about clever ways to extend, rather than shorten your oil change interval. But our boat engines are rarely run for more than a few hundred hours a year, so why bother with anything other than frequent changes?

I run mine about 400 hours a year, so I am changing oil and filter roughly once a quarter. It's a simple job, costing little in the way of either money or effort.