JHZR2
Staff member
What oil are you running in your 4 strokes?
- Thread starter FastLane
- Start date
I have a 7.4 L fuel injected V8, currently running Starbrite semi-synthetic 25w-40 (because it was cheap at Walmart). My next change will be Triax full synthetic Marine Ultra 25w-40. It's the best deal around at $38 for 5 quarts. I am currently running Triax marine gear lube in the gearcase, Triax fluid in the power trim, and power steering unit as well. Love this stuff.
My son bought a boat yesterday with a 25hp
Mercury jet 526cc L3.
Pennzoil ultra platinum Euro 5w40 is on sale, meets API SP, vis@100C 13.3 should work for him along with a Fram Ultra synthetic 6607.
What say you outboard motor experts?
Am I out to lunch on this one?
Mercury jet 526cc L3.
Pennzoil ultra platinum Euro 5w40 is on sale, meets API SP, vis@100C 13.3 should work for him along with a Fram Ultra synthetic 6607.
What say you outboard motor experts?
Am I out to lunch on this one?
Delo 15w-40 for my Merc 60hp.
Same. Used Delo 15w/40 in my old Yamaha 50 4 stroke and will do the same for a newer Merc 115 on the pontoon. Very rare we ever go
past 1/2 throttle except for towing kids on a tube.
I'm running at or near WOT for several minutes at a time along with plenty of idling. I once checked oil shortly after a run and did not see any "Foam" on dipstick. I have noticed oil slowly rising up dipstick due to fuel dilution, so I change oil every 50 hrs or so. Oil filter every other oil change.
Just standard sae 30 in my briggs outboard though.
Been using Mobil delvac 15w40 in my dad's boat with a 25hp merc
HPL Small Engine Life 10w40 in my zero turn, HPL Generator Life 5w40CC coming for some residence time in my generator.
