oil viscosity

[rndra]

Toyota says to use 5w30 oil but I live in the tropics and my mechanic says that 5w40 should do no harm to the lexus engine. Should I believe him of stick to Toyota recommendation ? I own an Epic 22, Ddrive, millenium edition.

Thanks for any advice on the matter.

[toyotafreak]

That engine's so tight that warm ambient temp or not, I'd recommend sticking with Mobil1 5W-30.

[cyclone]

Where in the tropics?

[Bitzco]

Them there tropics is where them agillators and crockodillers lives. I seen em so big they ate my frien' and his Yota in one big bite. Be careful man. Them Anaconders kin swaller ya whole if'n ya fall off yer board. Not to mention them head shrinkers and head hunters and those guys what eats thier gramma when she croaks. Nice warm water an weather though.

[rndra]

The boat is being operated in Kuala Lumpur Malaysia. The reason why I am asking the question is that despite having a perfect bill of health for the engine (the boat has 600hours), after a few hours on brand new oil I hardly reach the 80psi mark when pushing the boat.

[cyclone]

Replace your oil pressure sender, it is faulty. It is a common problem, easy to fix. Not an engine problem!

[matthewf]

also, make sure you are using a 'quality' mineral oil or full synthetic. 40w would be no problem in malaysia. if you loose some oil pressure when engine is nice and hot and worked hard, it may be not the right oil...(not robust enough,spend more money)

warmer climates, like malaysia or here in australia often have 40w specified (some new alfa's are 60w!!!) often a 30w is specified to ensure engines meet strict pollution control during cold starts etc...

[HCollado]

My engine rarely passes 160*. I've noticed that the oil turns very dark ususally after 45 hours or so. I am been told is becouse the engine is not running hot enough. 

I know one thing for sure, I change the oil and my annoying chirping goes away because the oil pressure never drops below 25 lbs.

Are the directions on how to change the oil pressure sender in the maintenance menu?

[ScarabEpic22]

So how do I replace the oil sender?? My 99 E22 was running sometimes with almost no pressure, or so the guage said, but the light never came on, it was just the annoying beep.

Thanks

Erik
99 E22

[wakejunky]

FYI
 I was bored the other day at the dealership and found myself looking at the LS400(same engine as our boats) engine manual. Really just wanted to look at the circuit and see why we have the problem we do. What I found out is at idle our boats can have as little as 4psi of oil pressure. THAT'S RIGHT per the manual 4psi at idle is perfectly normal. Another little bit the LS400 has no oil pressure gauge with a traditional sending unit on the block. All it has is a low pressure switch. If the oil drops below 3 psi it turns on the oil light.
? ? So when Toyota marinized the engine they had to replace the switch with a sending unit. That's why it has the GM/FORD looking oil pressure sending unit with the little single wire pig tail. instead of a nice factory looking wire harness and connector.
? ?I believe they are having problems finding an off the shelf sending unit that is capable of showing 4 psi as normal and not low. All the tundras and sequoias have oil pressure gauges and they have several bulletins out for even their own sending units not working and showing low oil pressure. just another thought in my 7 year employ at Toyota I have never seen a oil pressure gauge that shows actual values and several of their engines have an "idle and off idle"mark on the oil pressure gauge.

I think its ironic how much attention I pay to this stupid gauge problem knowing full well Ive NEVER seen an oil pump go out on a Toyota. And Ive overhauled in the neighborhood of 375 engines. But that damn beep drives me nuts. I'm half way tempted to put the LS400 low oil switch on it and install an in dash light for it.
 
scarabepic22 to change the sending unit locate the oil filter you will see the sending unit on the same housing as the filter. I believe its pointed down. just unscrew and install new sender a small amount of oil will leak out when you remove the old one. would love to know the outcome of a new sending unit and what the guage will read at idle after the repair?

[toyotafreak]

Oh man, I'm unable to stand up right now (jk). 375 overhauls...

Please, don't ever sell your Epic. Someday we're gonna need you BIG time.

I'm sure I'm not alone in really appreciating these so-called 'tidbits'.

[ScarabEpic22]

Thanks for the how to, but is this the correct part number?
MTR0010974 - Sender,OilPressure,WaltersV-Drive

I dont have the vdrive, mine is a E22 DD.  I figure I will be able to do this next summer when my boat is out of storage.

[cyclone]

This has been discussed repeatedly, Derek is right we have no thread discipline. I wasn't raised with it, blame my 'rents. If you buy a sending unit from Overtons for an inboard, it will work fine.

[Bitzco]

I'm just glad the lack of thread discipline has nothing to do with me. By the way, did you know they have discovered a new blood type that only 2 people in the world have been found to have?

[festivus]

Only 2 people?  That sounds suspicious to my scientifical mind. If only 2 people out of how ever many billion are living, then how'd the find it and say only 2 people have it?  They'd have to test all of the pygmy people in the jungle, the chinese in those high mountian temple cities, etc.  Speaking of high mountain temple cities, did any of you guys see batman begins?  There was one in that movie.  Looked pretty cool.  It's where batman learned all those secret government ninja moves that are illegal to you and me.