02 Rinker 242 fiesta vee with 5.7 Mercruiser — Rinker Boats

3 Апр 2014 | Author: | No comments yet »
Rinker 242 Fiesta Vee


Hello am new to this site. would like some info on what type of oil to use on my 5.7 engine i have had the boat a yr and i want to change the oil on it but i don’t know what type or weight of oil to use any info will be helpful.

you’re out of warranty already, and your engine is not a spring chicken, which leads me to make the following suggestions:

your engine lacks catalysts, which means zinc and phosphorus slipping past the (likely well seated ) rings, and/or the positive crankcase ventilation pushing oil into the induction path, both from the effects of blow-by, won’t have any seriously detrimental (read: $expensive$) affect to long term operation. Zinc and phosphorus protect hard parts, and allow the oil to cling to them while sitting long periods.

rust is your enemy internally. boat engines are susceptible because they often go long periods without being ran, and are near sources which promote condensation more readily. rust inhibitors drip off- unless you plan for that. most oils intended for auto’s lack the rust inhibitor compounds of marine specific oil.

your engine runs in an environment more suitable for a diesel than a gasser- which is to say constant RPM’s in at least the top third of the engines designed range and a steady load. diesels weigh way too much to use in smaller applications and have to be torque ratio reduced/translated to horsepower, which requires more gear box (translate, more weight). high constant RPM’s make demand for oil’s that can withstand the purpose- such that racing oil would be best suited. but still you need the other compounds, too. but you can’t be playing chemist and mixing your own cocktails. some oils don’t play nicely with others, and the last thing you need is separation under load at high RPM.

In another thread, I suggested the best oils ‘for me’ are these, in descending order. yours are going to differ based on ambient temperature, time/engine hours between swaps, and the advice from an oil analysis that I keep harping on here.

— Amsoil Dominator 15w50. racing oil. made for high RPM’s under extended periods and has superior shear strength.

— Amsoil Z-Rod 10w50. classic auto racing oil. made for HP engines that sit unused for long periods between runs. high shear strength and lots of rust inhibitor compounds.

Rinker 242 Fiesta Vee

— Valvoline 4T motorcycle oil in 20w50 full syn. don’t laugh. the same compounds that apply and stick to the wet clutch system and lubricate the rotational assembly in the same volume will treat a marine engine kindly, too. it is designed for silly high RPM’s that our engines will never see.

— Merc Marine 25w40

— Rotella T6 5w40

— Mobile One 4T 10w40

all that said, start with the analysis.

Rinker 242 Fiesta Vee
Rinker 242 Fiesta Vee
Rinker 242 Fiesta Vee
Rinker 242 Fiesta Vee
Rinker 242 Fiesta Vee
Rinker 242 Fiesta Vee

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