What kind of oil do you run in your boat?

[HCS]

Period.
What Brand and weight?
Valvoline racing straight 30w.

[voodoomedman]

Period.
What Brand and weight?
Valvoline racing straight 30w.
Torco Racing 20-50

[Sigus]

Kendal 40 (not sure on the spelling)

[bruddah]

castrol synthetic blend 5w-20

[Jyruiz]

The Merc stuff.

[Run_em_Hard]

Valvoline VR-1 Straight 50 wt

[clownpuncher]

Torco Racing 20-50 here as well. Recommended by my builder.

[Kilrtoy]

The really expensive kind

[JMC]

Kendall GT straight 50 wt.

[Chromegorilla]

Straight 40wt.... different brands.

[voodoomedman]

The really expensive kind
I thought egg beaters ran on 110V? :D

[robsformula]

castrol 20/50

[Benjhamina]

I usually run bannana boat 5spf for me and straight baby oil for the girls. As far as motor oil goes well.....only the guy at the shop knows that.

[dicudmore]

Yamalube 2M

[xs ultra]

40 wt. Valvoline

[Lightning]

Valvoline 40wt

[Deano]

castrol synthetic blend 5w-20
Same here. I top it off with duralube....stuff really works;)
(edit..whoops....I use 20-50)

[HCS]

I usually run bannana boat 5spf for me and straight baby oil for the girls. As far as motor oil goes well.....only the guy at the shop knows that.
Same here straight baby oil. I think it's about 2 weight.

[RiverToysJas]

Quicksilver 25/40 and Quicksilver High Perf. Gear Oil in the drive.
RTJas :D

[centerhill condor]

castrol 20/50
ditto!

[Kilrtoy]

I thought egg beaters ran on 110V? :D
I wish
its $16 a gallon

[roostwear]

Quaker State 10w-40 blended synthetic/dyno oil

[SmokinLowriderSS]

Castrol Syntech (the 100% fake stuff, not the blend), 20w-50.

[HCS]

My manual say to not run multigrade oil in the boat. Then to run different weight oil depending on the outside temperature of where you live.
Thinking going 40w.

[acatitude]

My manual say to not run multigrade oil in the boat. Then to run different weight oil depending on the outside temperature of where you live.
Thinking going 40w.
bs... 20-50.......valvoline racing oil

[Zaairman]

Uhh...the cheap stuff from Bass Pro Shop. :rolleyes:

[HammerDown]

Valvoline VR-1 Straight 50 wt
Same here...great Oil!

[TT_trawler]

Mobil 1 10-30...my manual says to use 30wt and not to use
multi vis...I like living on the edge.

[OCMerrill]

Royal Purple in the engine, Torco in the 1/2 whacker.
Is it the right choice? My Wallet doesn't think so.:)

[boatnam2]

kendal 50wt

[catman-do]

Im running the quicksilver mercruiser oils. Ive been told by mechanics that they are strict about warranties and they would void it if they found another oil in it.

[AZJD]

KY warming massage gel!:eek:
Now I run Valvoline Racing 20-50wt at the recommendation of my mechanic!

[502schiada]

Valvoline racing 60 wt

[DeltaSigBoater]

Im running the quicksilver mercruiser oils. Ive been told by mechanics that they are strict about warranties and they would void it if they found another oil in it.
I've been told the same thing but honestly how is a mechanic gonna know the difference? Its not like the engine is going to tell him, "hey dude about X long ago my owner did his own oil change and didnt use Mercury Marine Oils!"

[79 HUSTLER]

50 wt. kendall

[9er]

Valvoline VR-1 Straight 50 wt
Yep, that's the shiz..........

[acatitude]

all that heavy weight oil does is put a lot of strain on your oil pump.. 60 weight is way to heavy... my 2 cents. and those that say don't use multi grade???? what motor is subjected to more start stop cruise, high rpms then a boat motor?? its more of a whatever makes ya warm and fuzzy... and topless don't count in that:D :D

[SoCal_fun]

Volvo full Synthetic 30 wt.
Just to be different. :)

[HPLavey]

40 wt is fine at Havasu because of the temps. I use the Valvoline VR1 20 50. I think unless you have a high rpm motor it probably does'nt matter much. The key is chang it frequently

[Jbb]

Valvoline 40 wt racing oil.....K&N filters

[wolfie]

Im running the quicksilver mercruiser oils. Ive been told by mechanics that they are strict about warranties and they would void it if they found another oil in it.
Unless they can prove that the oil is what caused the failure and you are running a like oil, it's a violation of the Magnuson-Mass Warranty Act. I had something like this with the Chevy dealership. I got the other product manufacturer involved. Once the dealership got a call from the manufacturer they did a quick about face.

[707dog]

mercruiser chit!! 25-50 or somthing like that...

[eliminatedsprinter]

Evenrude at 50 to 1.:D

[BadKachina]

Mobil 1 V-Twin 20/50
The V-Twin has more anti wear additives than any other oil on the market. It's also 8 to 10 bucks a quart depending on where you buy it. The only oils in the same league are Redline 20W-50 and Amsoil 20W-50 Racing.
Want a couple of days or reading on additives and antiwear agents???
http://www.offshoreonly.com/forums/showthread.php?t=107808&page=62&highlight=mobil

[DMOORE]

Mobil 1 V-Twin 20/50
The V-Twin has more anti wear additives than any other oil on the market. It's also 8 to 10 bucks a quart depending on where you buy it. The only oils in the same league are Redline 20W-50 and Amsoil 20W-50 Racing.
Want a couple of days or reading on additives and antiwear agents???
http://www.offshoreonly.com/forums/showthread.php?t=107808&page=62&highlight=mobil
BadKachina, this is very true. It's one of the best oils out right now. There is a thread going on in gearheads also right now. The antiwear agents are a major factor in oil performance.
Darrell.

[MBlaster]

Castrol Syntech (the 100% fake stuff, not the blend), 20w-50.
Same here, love the Syntech 20-50.

[502schiada]

all that heavy weight oil does is put a lot of strain on your oil pump.. 60 weight is way to heavy... my 2 cents. and those that say don't use multi grade???? what motor is subjected to more start stop cruise, high rpms then a boat motor?? its more of a whatever makes ya warm and fuzzy... and topless don't count in that:D :D
I run 60 wt as suggested by my engine builder Clay Smith, mainly because of high Rpms in a boat. Im at 80 psi at idle cold, and 30 psi hot and 70 psi hot cruising.

[HCS]

I'm going to get my book out when I get home. It states why not to use multigrade.
I'll post later what it says. Unless someone else has the info before I do.
I'm sure it's do to the temperature changes that boats go through.

[LHC30Victory]

I dont have the $$ that BadKachina does so I take the second best from that thread on OSO = Mobil 1 GoldCap 15-50 syn in the HO's and for the Hi-Perf Merc Wacka on the toon, Merc oillll

[ovrkll77]

pepboys 40w

[HCS]

pepboys 40w
You should switch to Sta-Lube multi-grade Syn-go full synthetic. http://www.***boat.com/ubb/graemlins/idea_2.gif

[SmokinLowriderSS]

My manual say to not run multigrade oil in the boat. Then to run different weight oil depending on the outside temperature of where you live.
Thinking going 40w.
Dad's manual read pretty much like any car manual with a temp/advised viscocity chart, and dad ran the same 10w-40 in Lowrider that he ran in all our vehicles for the entire 25 years he owned her. The engine was fine when dismantled for rebuild/upgrades winter of '04/'05.

[Jbb]

That guy on the TV infomercial said once I put his additive in ....I could drain the oil.....and even fill the crankcase with water.......and she'll run just fine......those TV guys are just amazing!

[Tom Brown]

I'm going to hold out for the next generation additive which will allow for the use of salt water in the crank case.
Experts predict that by 2011, we'll be running small stones in our crank cases in a science sponsored devil-may-care flaunting of that past foe formerly known as... friction.

[Jbb]

I'm going to hold out for the next generation additive which will allow for the use of salt water in the crank case.
Experts predict that by 2011, we'll be running small stones in our crank cases in a science sponsored devil-may-care flaunting of that past foe formerly known as... friction.
Im assuming they are talking about those previously tumbled stones......that will actually polish things inside the case......what a great idea!...

[Trailer Park Casanova]

If you'e towing anyone with a 2 stroke, the Yamalube watercraft 2 stroke oil is excellent.
No stink, zero smoke.
It comes 2 ways, pre mix style or for oil injection systems.
Kids always bitched about the really stinky Merc oil exhaust when they were wakeboarding or tubing, and they were right it really stunk, so I experimented with a lot of brands and the Yamalube was tits.
No plug fouling,,15% off on the gallon cases, reasonable price to begin with, worked for us.

[Flashwave]

Wal-Mart 40 wt. $10 oil change. 30+ races and no problems.:D

[HammerDown]

Wal-Mart 40 wt. $10 oil change. 30+ races and no problems.:D
Which I think is Quaker State.

[maxwedge]

Wesson.
http://www.conagrafoods.com/images/brands/product_jpgs/wesson.jpg
Never had any problems.:D

[SmokinLowriderSS]

Which I think is Quaker State.
Back when I was a car mech and gas station jockey (which HAS been a year or 20), EVERY car I ever pulled a dipstick on, that was foamy, was a QS-filled crankcase.
I don't know if that has changed or not since I decided early on I was never running it and pretty much became a Castrol guy (Rotella in my diesel trucks I've had).

[maxwedge]

On a serious note, Rotella is supposed to be one of the only oils that still has enought zinc (high pressure additive) in it to protect flat tappet camshaft lobes. The EPA forced the oil manufacturers to take zinc out of thier oils because it harms cat converters. The deisels didn't have the same EPA restrictions until 07 so I don't know if Rotella still has enough zinc in it anymore to matter. Hot Rod had a big article about it a while back.

[Redwing247]

99 cents store special :D

[disco_charger]

On a serious note, Rotella is supposed to be one of the only oils that still has enought zinc (high pressure additive) in it to protect flat tappet camshaft lobes. The EPA forced the oil manufacturers to take zinc out of thier oils because it harms cat converters. The deisels didn't have the same EPA restrictions until 07 so I don't know if Rotella still has enough zinc in it anymore to matter. Hot Rod had a big article about it a while back.
I run Delo. Comp recommends it. They claim the "new" oils don't have enough of any of the old additives to support the old Mark IV BBC. If that's what they want, that's what they get.

[HammerDown]

On a serious note, Rotella is supposed to be one of the only oils that still has enought zinc (high pressure additive) in it to protect flat tappet camshaft lobes. .
As does Valvoline VR1-Racing ;)

[HammerDown]

Back when I was a car mech and gas station jockey (which HAS been a year or 20), EVERY car I ever pulled a dipstick on, that was foamy, was a QS-filled crankcase.
).
...era now how could you tell it had QS in the Pan...taste? lol

[HCS]

There was a time when everyone ran Castrol 20/50 in everything. http://www.***boat.com/ubb/graemlins/idea_2.gif

[HammerDown]

There was a time when everyone ran Castrol 20/50 in everything. http://www.***boat.com/ubb/graemlins/idea_2.gif
In my boat after an extended upper RPM run it turned into water.:sqeyes:
Maybe I would consider it again if I used a Oil Cooler.

[Pismo]

Mobil 1 VTwin 20-50
Mobil 1 75-90 in the drive

[Fountainduo]

Redline 20-50wt

[RiverRatMike]

Valvoline 10W 40 have been for years and no problems

[RaceFace]

Royal Purple 10/40....good stuff!

[2Driver]

Follow user manual for type and weight. After that oil is oil.

[bocco]

Mobil one in everything. 20-50 in the boat cuz it's an old motor.
Chit is expensive though. And the 20-50 is hard to find. 10W30 and 5W30 are available at Walmart and Costco.

[BarryMac]

Whatever lightning drains out of his is what I put in mine, it's a little dark but it has some life left in it... :D :D

[ANXIETY ATTACK]

Am i the only one that is using diesel oil (chevron Delo 400 15W40) the base oil is 90% pure compared to automotive oil 75% - 80% then think about the $140,000.00 Cat engines 18-1 compression, huge Tq loads on crank bearings, turbo shafts spining at 160,000 Rpm. floating on OIL. never had an engine lube problem on boat, truck, bike or high compression race olds.

[Mandelon]

Hawaiin Tropic #8 usually.

[Beer-30]

Mobil-1 from Costco. 10-30 in both the dually (Vortec 7400) and the boat (496HO). The truck has the familiar "5-30" on the oil cap. I broke it in with Valvoline 10-40. Switched to Mobil-1 at about 10K.
The 496, if it was in a pickup, would have the same 5-30 oil cap, so I feel 10-30, especially synthetic is a pretty good upgrade.