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Discussion Starter #1
Hello everyone-
We got the first snow in 28 years here and is looks like it will be in the mid 20's for a while. I am about 2 weeks past due for an oil change so what grade should I put in ...I usually use 10-40 but in cold weather will this do?
Als0- I am getting wierd oil pressure readings. When I accellerate the pressure goes from just above 0 to the mid range. As i drive normal the oil pressure is at like just above zero. I have enough oil in my z however it is really dirty and time for a chnage. Any suggestions?
-Travis 77z
 

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Discussion Starter #2
Re: 1st snow in 28 years.+oil+wierd oil pressure Q

Use 5w-30 in the winter easier starting and better running pressure especially on startup.
If you don't have a block heater should probably get a synthetic lubricant it tends not to thicken as much . From cold Canadian prairies

> Hello everyone-
> We got the first snow in 28 years here and
> is looks like it will be in the mid 20's for
> a while. I am about 2 weeks past due for an
> oil change so what grade should I put in
> ...I usually use 10-40 but in cold weather
> will this do?
> Als0- I am getting wierd oil pressure
> readings. When I accellerate the pressure
> goes from just above 0 to the mid range. As
> i drive normal the oil pressure is at like
> just above zero. I have enough oil in my z
> however it is really dirty and time for a
> chnage. Any suggestions?
> -Travis 77z
 

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Re: 1st snow in 28 years.+oil+wierd oil pressure Q

> Use 5w-30 in the winter easier starting and
> better running pressure especially on
> startup.
> If you don't have a block heater should
> probably get a synthetic lubricant it tends
> not to thicken as much . From cold Canadian
> prairies

Travis,
This too shall pass. If it's the first snow in 28 years then you probably won't have cold weather for very long. I also must assume that cold to you is not the same as cold is to our Canadian neighbors. For all-round use at temperatures above 0 °F the 10W-40 is fine.
Also, cold weather should naturally increase your oil pressures. Colder oil pumps harder than warmer oil. Your pressure readings are probably a result of a poor electrical contact of the wiring harness to your sender on the passenger side of your engine. Get some electrical contact cleaner and clean them up. You might be amazed at the affect that will have on your oil pressure. Close to 0 at idle is not unusual once the engine is warmed up with mid-range at 2,500 rpm +. I would expect it to be higher than that before the engine is warmed up - like nearly 1/3rd range at idle.
Merry Christmas
Phantom
 

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Re: 1st snow in 28 years.+oil+wierd oil pressure Q

> Travis,
> This too shall pass. If it's the first snow
> in 28 years then you probably won't have
> cold weather for very long. I also must
> assume that cold to you is not
> the same as cold is to our
> Canadian neighbors. For all-round use at
> temperatures above 0 °F the 10W-40 is fine.
> Also, cold weather should naturally increase
> your oil pressures. Colder oil pumps harder
> than warmer oil. Your pressure readings are
> probably a result of a poor electrical
> contact of the wiring harness to your sender
> on the passenger side of your engine. Get
> some electrical contact cleaner and clean
> them up. You might be amazed at the affect
> that will have on your oil pressure. Close
> to 0 at idle is not unusual once the engine
> is warmed up with mid-range at 2,500 rpm +.
> I would expect it to be higher than that
> before the engine is warmed up - like nearly
> 1/3rd range at idle.
> Merry Christmas
> Phantom
If cleaning the contacts doesnt do anything for you then change the oil pressure sending unit. Its easy to do yourself. As far as oil, I am fortunate enough to have the choice of leaving my z in the garage whenever incilimate weather shows its ugly face. But in my other cars I use Amsoil synthetic 0W30 in winter. My cars start and drive like it is 90 degrees outside. With other oils they just get that sluggish, dont bother me feeling at start-up. I highly recommend Amsoil. A lot of people never heard of it, but they have been around longer than any other synthetic brand Except Mobil 1. A recent magazine from Austrailia did a comparison of 10 synthetic oils and Amsoil came out on top. Hp gains, wear material in oil, and during the test suffered NO viscosity loss.
 

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Get new NISSAN oil sender

> Dude, just change your oil pressure sender.
> Stock one is garbage.

> Eugene '83ZXT

Yeah, and don't bother with the ten dollar jobs at the auto stores...they are worse than the stock one.

Nissan has a totally different designed one that is wonderful--but you will pay about fifty bucks...ouch!!

Live with it or shell out the moola....

John

P.S.
The post above is from experience...I've tried BOTH...tried to save money and ended up spending more!!
 

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Discussion Starter #7
Thanks Everyone!

> If cleaning the contacts doesnt do anything
> for you then change the oil pressure sending
> unit. Its easy to do yourself. As far as
> oil, I am fortunate enough to have the
> choice of leaving my z in the garage
> whenever incilimate weather shows its ugly
> face. But in my other cars I use Amsoil
> synthetic 0W30 in winter. My cars start and
> drive like it is 90 degrees outside. With
> other oils they just get that sluggish, dont
> bother me feeling at start-up. I highly
> recommend Amsoil. A lot of people never
> heard of it, but they have been around
> longer than any other synthetic brand Except
> Mobil 1. A recent magazine from Austrailia
> did a comparison of 10 synthetic oils and
> Amsoil came out on top. Hp gains, wear
> material in oil, and during the test
> suffered NO viscosity loss.

Thanks for the advice everyone. I will stick with the 10-40 because it will not get any colder then mabey 10 degrees this winter here. I will also get the nissan oil temp sender from the dealer.
Zya-Travis 77z
 

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Re: Thanks Everyone!

> here. I will also get the nissan oil temp
> sender from the dealer.
> Zya-Travis 77z

The new design sender from Nissan has like a plastic encased body.(it's a dark color) It looks totally different from the tincan design of the original.
 
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