Guest Posted March 17, 2008 Share Posted March 17, 2008 The trouble with boats, and not knowing much, and trying to learn stuff, is that (to paraphrase Newton's Third Law) for every expert there's an equal and opposite expert. I've had so many wildly conflicting opinions on how to fit a 24v heater kindly donated to me (thanks David) that the heater still remains in the original bag. The latest problem is oil. We currently run our engines with Delphi premium grade semi-synthetic diesel oil. However our suppliers are no longer able to provide this oil. My dad thinks we ought to look at fully synthetic oil instead (from Valvoline). When it comes to diesel engines he has does know quite a lot and, as former head of a military transport outfit has the benefit of years overseeing a workshop looking after the diesel engined military vehicles. Some of the mechanics that worked for him knew things about diesel engines that half the Broads yards couldn't even imagine. In his opinion fully synthetic oils perform excellently and last much longer and, in particular, still provide high performance at much greater temperatures than mineral oils etc can. Given that running hot is a well known issue with the VP MD32 engines we have he thinks it will provide an extra notch of protection for our engines. Having run the idea past a boating friend who himself is extremely knowledgeable and rebuilds (marine) engines "just for fun" he thinks it's a very bad idea stating that the 32's were never designed with lubricants of this nature in kind as they simply didn't exist back then. He feels if the engines are worn the synthetic stuff simply won't provide the necessary protection and feels the Delphi semi-synth we are already using is probably the best. So once again I am stuck between two conflicting opinions of people who "know". My dad is off to consult his chief engineer, a former boat owner, and the other guy is off to source a good second hand engine for us to replace the 32's when we kill them (very encouraging). We're not aware that our engines are highly worn, they shouldn't be as they only have 1600hrs on the clock (I know someone else with 12000hrs on his 32's) but they do go through a lot of oil compared to my cars. I don't know whether this is a sign of ware or simply a "feature" of engines from the 1960's. So I am offering up this opportunity for others to come and cloud the issue further. Perhaps I should have made this thread into a poll? Quote Link to comment Share on other sites More sharing options...
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