[AT] Switching from non-detergent to detergent oil

[Stephen Offiler]

Here's what I have typically heard:

- for pressure-lube engines (oil pump and filter) you want detergent oil.
 Detergent keeps contaminants in suspension to be carried to the filter.

- for splash-lube engines, you want non-detergent oil.   No carrying the
stuff around in suspension.  You want just the opposite. You want it to
separate out as quickly as possible.  Over time, yes, that's sludge.  But
it's stable, it just sits there.

SO



On Wed, Aug 13, 2014 at 9:18 AM, charlie hill <charliehill at embarqmail.com>
wrote:

> If it was me, I'd fill the crankcase with diesel fuel and let it sit for
> a few day, dump it out and see what comes out, repeat if necessary,
> refill it with detergent oil, run it a few minutes
> and dump it and see what the oil looks like and go from there.
> But, that's just me.  If you don't want to take the risk just run the
> non-detergent oil.
>
> Charlie
>
> -----Original Message-----
> From: Dick Day
> Sent: Wednesday, August 13, 2014 7:50 AM
> To: ATIS
> Subject: [AT] Switching from non-detergent to detergent oil
>
> I just acquired several older Briggs engines. They all run fine but
> discovered that the PO was using non-detergent oil.
>
> The manuals all say to use detergent oil.
>
> What can I expect to happen if I switch from non-detergent to
> detergent.  Everything else I have uses detergent and I would love to
> be able to stock they same type of oil.
>
> Thanks
>
> Dick
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