marinetrader
Senior Member
- Joined
- Oct 6, 2007
- Messages
- 301
100 hours or so here; manual advises 200 hours.
100 hours or annually, whichever comes first .
.....By the way Advanded Auto has Rotella for $13/gal right now! .
Why not just use a multi viscosity oil and be done with it?Chrisjs,
Simple.
Want oil thicker than 30W and thinner than 40W.
All real authorities I've ever read all agree that the higher the viscosity the oil the lower the wear.
I warm up to cruise speed in steps that take about 10 minutes.
Somehow I can't bring myself to run 40W in a nearly new engine.
And 30W is not very viscus when warm.
Personal preference.
I warm up slow and never have any trouble starting.
On your engine it's probably a whole different deal, particularly if what you're doing is the procedure recommended by the manufacturer.
rwidman wrote:
"Why not just use a multi viscosity oil and be done with it?"
You do'nt get it. I do'nt run multi-vis oil because I do'nt need it.
I do'nt warm up my engine slowly because I need to.
I take 10 minutes to warm up anyway so why should I run oil that is less effective at lubricating so I can reduce my warm up time when I would'nt anyway.
What's your warm-up procedure?
Maybe another way to approach this issue is to ask whether you can change oil too often (putting aside cost,inconvenience,and the planet)? The answer is likely to be negative.
There is every reason to follow the manufacturer`s recommendation on oil and change frequency,tempered by a little commonsense on how you use your boat, using the best quality recommended oil you can afford. BruceK
I second that. I use Castrol 10-40w Magnatec Diesel, and it works fine. I change yearly, which is less than 100 hrs because we don't do as much as that, (unfortunately), and always new filter each time, and I don't have to add oil in between, so I reckon all is pretty well, and I don't see the point in doing oil testing.Why not just use a multi viscosity oil and be done with it?
So if it's a 1940s airplane radial, I operate it as though it was 1940.