How long will a impeller last with the volvo grease

[RichardS]

Incidentally the grease I referred to is the sachet of "grease" (which isn't actually grease) supplied by Volvo when you buy an original Volvo impeller kit.

It's probably glycerine although that will act as a grease until the water washes it away. I always ditch that stuff and use proper silicone grease which is a lot more water resistant but, from the impeller suppliers point of view, a lot more expensive.

Richard

 

[AntarcticPilot]

So I guess the answer to my post is that nobody knows! Fair enough neither do I.

Incidentally the grease I referred to is the sachet of "grease" (which isn't actually grease) supplied by Volvo when you buy an original Volvo impeller kit.

I always thought it was supplied to deal with the likely possibility, that on first starting the engine there could be a short period when the pump runs a bit too dry. I am not so sure it's supplied to make it easier to install the impeller, as the minute you cover the impeller with the stuff it becomes like a bar of wet soap! From the perspective it would be easier to install it (at least on my D2-55) without the stuff.

It's definitely supplied to make it easier to insert the impeller; you're meant to hold the impeller with long-nosed pliers or some such while inserting it. Without the lubricant, it's very difficult to align the pin in the impeller with the key-slot in the end of the shaft. I'm speaking for the Volvo 2003, but I can't see that it would be much different for other engines. As the lubricant is (I think) glycerine based, it isn't going to last more than moments after the pump starts; it will wash away almost immediately.

 

[RichardS]

As the lubricant is (I think) glycerine based, it isn't going to last more than moments after the pump starts; it will wash away almost immediately.

Although no water has been past the OP's impeller so the glycerine will last much longer.

Richard

 

[AntarcticPilot]

Although no water has been past the OP's impeller so the glycerine will last much longer.

Richard

Yes - it'll probably caramelize instead!

 

[RichardS]

Yes - it'll probably caramelize instead!

I don't think glycerine will decompose to caramel even though you could, presumably, use it to sweeten your tea ..... and you would have to be generating some serious temperatures to degrade it.

Richard