Re: Marine Lubrication
 

I know a guy who is in a similar situation and uses V-Twin with low seasonal hours. He just changes on a yearly basis. This oil has a great anti-corrosion package and you can do it without fear. Indoor storage and less temperature and moisture fluctuation are key points in this scenerio.

Re: Marine Lubrication
 

Hydrocuiser the problem is that the Mobil-1 20W-50 V-Twin oil is not available in Europe, according to Mobil customer support here in Denmark. So I am considering one of the 20W-50 oils from Amsoil and I am wondering which of the 3 versions to use. Is the MCV (motorcycle V-twin) from Amsoil a reasonable substitute for Mobil-1 V-Twin ?

Re: Marine Lubrication
 

Not to get too off the topic, is anyone using a System 1 oil filter? My machinist talked me into getting one of these but System 1 recommends not using the factory relocater Mercruiser provides. Does anyone know of a filter adapter that will work without spending the big bucks for a billet style?

Re: Marine Lubrication
 

Amsoil 20W-50 Racing Severe Service is right up there with V-Twin M-1

Re: Marine Lubrication
 

Hydrocruiser - I can't believe that I made it through all of this information. What a great post! With new engines, how long should I leave the break-in oil before changing to the Mobil oil you recommend? Then, how often do you recommend changing oil - how many hours if I only put on 30/year? 700 hp NA, 1050 Holley. What filter do you recommend? And, what drive oil? I saw your list of oils and filters, but wondered if there are specific ones you would recommend for my application? Thank you.

Re: Marine Lubrication
 

Since you go 30 hrs per season if it were mine...and I wish it was...leave the break-in oil in there for 15 hrs and then go to Mobil-1 V-Twin 20W-50 or Amsoil 20W-50 Racing.

I like Amsoil Marine Drive oil as it is very kind to the seals...and you need a high flow oil fiter with that engine so I would go with a k&N; Wix racing or Fram Racing oil filter.

Got showers on the drive?

Have a great season!

Oil Filter f/ most Mercruisers
FYI:The thread type on the filter is 13/16-16.
Fram: PH5, HP4, DG5, PH13 (no anti drainback) Pureolator: L34631
Purolator Pure One: PL34631
AC: PF1218, PF932
Motorcraft: FL-12A
NAPA: 1060, 1060gold
Wix: 51060
Wix Racing: 51060R, 51061R R= Racing
K&N: HP3002
Baldwin: B1428 (Top Rated)
Amsoil: SDF-24
Hastings: LF279
Fleetguard: LF3679
Mercruiser: 35-802885Q
Mobil 1: M1-302 or M1-111
Kendall: K31
Penzoil: PZ45
Quaker State: QS5
Shell: S63, SH38
Texaco: T38, T38B
Warner: PH1218
STP: S01218
Valvoline: V056

Re: Marine Lubrication
 

hydro, have you ever heard of something being wrong with the filter and the oil going to bypass?

Re: Marine Lubrication
 

And don't forget about the new Amsoil filters. You can only get SD's if they still have them in stock. I just ordered a load from Amsoil including a few EAO24's. The new ones are expensive (about $12 dealer cost) but as supposed to be higher flow and even better filtration than the SD's.

BTW, I also got my 20w-50 Racing oil for the boat. We'll see if it makes me go faster. :D

Re: Marine Lubrication
 

Using a cheap or improper bypass valve in an oil filter on a performance offshore boat almost assures the valve is always open...you need a quality filter that is matched to the engine.

Re: Marine Lubrication
 

The Amsoil SD filters are solid and flow and trap well. But for big horsepower (700+) or blowers... go with a big flow capacity that the racing filters from Fram Racing and Wix Racing offer; flow supercedes micro-filtration..especially when racing.