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03-02-2016, 06:32 PM
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#1
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Registered User
Country: England
Location: Crayford, Kent.
Occupation: Electrical gezza!
Interests: Petrolhead
Boat name: Wayne Kerr
Boat make: Phantom xl
Engines: Mercury 2.5, 200(ish)
Cruising area: Essex, Hampshire, Mediterranean
Join Date: Sep 2004
Location: Crayford, Kent.
Posts: 1,199
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2-stroke oil
Anybody used the Rock Oils MP3 semi synthetic stuff, is it any good?
It's NMMA TCW-3 & cheaper than the Quicksilver stuff.
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03-02-2016, 06:42 PM
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#2
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Registered User
Country: uk
Location: berks
Occupation: Plumber
Interests: speed!
Boat make: P20/ extreme 21
Engines: 2.5 offshore/2.4 mod vp/ 350 mag mpi
Cruising area: south coast
Join Date: May 2008
Location: berks
Posts: 436
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Used it for the last two seasons and have ever had a Problem due oil. I did run a 2.4 steel bore at 7250rpm at 32.1 with no signs of wear. Hope that helps out
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03-02-2016, 06:58 PM
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#3
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Registered User
Country: England
Location: Crayford, Kent.
Occupation: Electrical gezza!
Interests: Petrolhead
Boat name: Wayne Kerr
Boat make: Phantom xl
Engines: Mercury 2.5, 200(ish)
Cruising area: Essex, Hampshire, Mediterranean
Join Date: Sep 2004
Location: Crayford, Kent.
Posts: 1,199
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Malc20, it does mate thanks. All points of view are knowledge.
I used to run with Castrol Bio-lube until it priced itself out of the affordable market.
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03-02-2016, 07:11 PM
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#4
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Registered User
Country: uk
Location: berks
Occupation: Plumber
Interests: speed!
Boat make: P20/ extreme 21
Engines: 2.5 offshore/2.4 mod vp/ 350 mag mpi
Cruising area: south coast
Join Date: May 2008
Location: berks
Posts: 436
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I was paying £30 for 5litres of the MP3!
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03-02-2016, 07:26 PM
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#5
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Registered User
Country: England
Location: Salcombe, Devon
Occupation: Marine Engineering and Storage
Boat name: Puffin
Boat make: Westerly 21
Engines: Lister Petter 6.6
Cruising area: Plymouth to Exmouth
Join Date: Sep 2013
Location: Salcombe, Devon
Posts: 225
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i used the Rock Oil DFI in my XR2 all season. Not a single bearing sound and psi still 152psi each cylinder. We where running it at 7000rpm a lot and with a few lesser experienced drivers having a go. it performed amazingly. i am an authorised Rockoil dealer and sell the dfi (synthetic which exceeds evinrude x100 and mercury high performance and TCW3+) for £7 a litre (more than 3 starts bigger discount and quote boat mad and even more discount). PS dont rate Amsoil as ****ed a ring very quick when using amsoil (as recommended by others on here although this was on a yam 115!)
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08-02-2016, 11:36 PM
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#6
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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I have heard that rock oil is very good.
Although having used Amsoil for more than 20years I would be reluctant to change. Always ran XR2 at 75:1 on it always ran spotless as do the Yams !
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If Only
National Outboard Immersed Propeller Mono Record 103mph
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11-02-2016, 05:10 PM
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#7
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Registered User
Country: England
Location: Newport Isle of Wight
Cruising area: solent
Join Date: Nov 2007
Location: Newport Isle of Wight
Posts: 308
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Anyone used the rock oil DFI in an Opti?
The sales rep said its the same and half price. Just never had the bottle to use. Same as thier high performance gear lube.
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11-02-2016, 05:55 PM
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#8
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Registered User
Country: Uk
Location: Cheshire
Boat make: Concorde Orlando
Engines: Mercury V6
Cruising area: North wales
Join Date: Mar 2014
Location: Cheshire
Posts: 309
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We ran Rock oil in our 150 opti for approx 2 years, meets the spec
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14-02-2016, 02:11 PM
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#9
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Registered User
Country: England
Location: Newport Isle of Wight
Cruising area: solent
Join Date: Nov 2007
Location: Newport Isle of Wight
Posts: 308
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While we are on the subject. A local supplier to me has started selling MPM oil. Their website states different engines for marine and why oil to use. They do say that the high performance gear lube they sell is the same as quicksilver high performance gear lube.
What's the spec of the blue HP oil from mercruiser? Just the blue die in it which the MPM also has. If a little green. Rather than blue.
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