250 forum posts
From what I have learned on this site I will replace castor with ML70 and EDL oils. Not sure about EDL2 or EDL3 but ML70 and EDL1 seem to be a perfect replacement for castor as they are high viscosity but synthetic. So no carbon residue or guming up. It seems that a low visc oil (like klotz) is not as desirable for a four stroke compared to a high visc oil for ultimate protection. This is the impression I have got on here reading what Jon from Laser engines has posted and others.
I did notice that my Chinese engines ran better on supaglow compared to Irvine fuel and I did think it was down to the Irvine stuff being thinner but my car engines seem a little more unstable temp wise on the Klotz oil so it could be that.
If I were you and was gonna try synthetic I would go with ML70 or EDL in four strokes.
|robert chamberlain||23/09/2018 04:38:48|
|123 forum posts|
I have tried to E-mail Brian Winch (Wizard of Oz) several times about a question on my HP VT but the message keeps coming back as undeliverable . Any ideas about the correct address?
|David Davis||23/09/2018 06:33:44|
3399 forum posts
What do you need to know about the HP VT engines Robert? I've owned five of these and consider myself pretty knowledgeable.
|Denis Watkins||23/09/2018 08:17:46|
|3880 forum posts|
Well recommended on here Bob, ModelTechnics Laser 5 Fuel, which is synthetic
The industry evolved away from Castor fuel with good reason
|Paul Marsh||23/09/2018 10:09:52|
3710 forum posts
Caster used to seal everything, including exhaust outlets, valve inlets and bearings... "The Good 'ole Days..."
|David Davis||23/09/2018 10:50:23|
3399 forum posts
I keep some Southern Modelcraft Double Hi Lube fuel especially for the HP VTs. I have three left, a 25 and two 49s and I'm thinking of selling the 49s.
However, if I knew that I was going to use these engines, I would not be averse to running one of the HP VTs on fuel made with synthetic oil. What's the worse that could happen? If a ring goes or if a piston seizes in the bore, spares are available from MECOA in the USA.
That said, the only time I've ever seized an engine in mid air was when I ran an HP VT 21 on ordinary fourstroke mix, 15% synthetic oil, 10%-15% nitro, but I could have been running the thing too lean!
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