mvweebles
Guru
- Joined
- Mar 21, 2019
- Messages
- 7,682
- Location
- United States
- Vessel Name
- Weebles
- Vessel Make
- 1970 Willard 36 Trawler
Rotella fan here too. Only question is which flavor. T5 for my ancient Perkins
Peter
Peter
Rotella fan here too. Only question is which flavor. T5 for my ancient Perkins
Peter
Why are all you guys worried about moisture in your crank case? There is hardly any air movement in ‘ out of the engine oil system. I just don’t see this being as big an issue as people make it out to be. If I do a season of 100 hours , I’m not throwing away good oil . I run it the next season . My boat is only sleeping for 3 months .
I'm using T4. Should be better than anything they had back in 1979.
But I see T5 is only $3 more a gallon so maybe next time.
https://www.machinerylubrication.co...dergo this process is known as hygroscopicity.
"Oils by nature are hygroscopic, which means they absorb moisture from the air. The tendency of an oil to undergo this process is known as hygroscopicity."
On this subject, I have always used Rotella but recently have heard that it is no longer a preferred oil. Any opinions on that?
Oil changes on ours are based, I would assume, on worst case scenario
Example : running at full tits underground in a mine site sucking in lung fulls of coal dust
Based on that and our running at a fast idle with clean air I now do them on litres of diesel burnt, the graphs are in our manual.
That puts us out at around 600 hours and, at that schedule, the old oil coming out still looks as clean as the old oil going in.
Any oil by any major manufacturer is just as good, one for another.On this subject, I have always used Rotella but recently have heard that it is no longer a preferred oil. Any opinions on that?
Whoa, say that three times fast!
A guy at my marina who was a truck service manager got it from an engine manufacturers rep. I didn't get the impression that the guy was selling his own lube product. I need to Q him a little more.Not sure where Rotella fell out of favor....haven't seen that in forums I watch.... have a source?
Newer diesel oils (not just Rotella) no longer contain as much ZDDP as they used to. Still more than most passenger car type oils though. So changes like that might make it less suitable for certain specific applications now and would require a more specialized oil. But any of the major brand HDEO oils (like Rotella) are at least a pretty decent oil and should turn in at least acceptable wear performance in any engine they're suitable for use in.