10W30 vs 10W40 in a 2002 TJ
 

Is their a serious downside to using 10W40 as opposed to 10W30 in a
2002 TJ as I appear to have a lot more choice of oils at this weight
than the 10W30 in full synthetics. I was reluctant to go down to the
0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
need that amount of cold weather starting capability.

Cheers
Nick

Re: 10W30 vs 10W40 in a 2002 TJ
 

Nick wrote:
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.

The first number doesn't matter that much, but the second does. I've
been running 5W30 for quite a while and it works fine. Now if your in
a very hot climate then 40W will work well. When all else fails consult
the service manual or call a local Jeep dealer.

--
DougW

Re: 10W30 vs 10W40 in a 2002 TJ
 

Nick wrote:
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.

The first number doesn't matter that much, but the second does. I've
been running 5W30 for quite a while and it works fine. Now if your in
a very hot climate then 40W will work well. When all else fails consult
the service manual or call a local Jeep dealer.

--
DougW

Re: 10W30 vs 10W40 in a 2002 TJ
 

Nick wrote:
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.

The first number doesn't matter that much, but the second does. I've
been running 5W30 for quite a while and it works fine. Now if your in
a very hot climate then 40W will work well. When all else fails consult
the service manual or call a local Jeep dealer.

--
DougW

Re: 10W30 vs 10W40 in a 2002 TJ
 

What does your owners manual say there are reasons for that and to numerous
to mention just follow your manual you can never go wrong.
Coasty


"Nick" <nick@nospam_nrdavis.demon.co.uk> wrote in message
news:emm213dobsqnundl96a15tmbjug5ub6pi6@4ax.com...
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.
>
> Cheers
> Nick

Re: 10W30 vs 10W40 in a 2002 TJ
 

What does your owners manual say there are reasons for that and to numerous
to mention just follow your manual you can never go wrong.
Coasty


"Nick" <nick@nospam_nrdavis.demon.co.uk> wrote in message
news:emm213dobsqnundl96a15tmbjug5ub6pi6@4ax.com...
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.
>
> Cheers
> Nick

Re: 10W30 vs 10W40 in a 2002 TJ
 

What does your owners manual say there are reasons for that and to numerous
to mention just follow your manual you can never go wrong.
Coasty


"Nick" <nick@nospam_nrdavis.demon.co.uk> wrote in message
news:emm213dobsqnundl96a15tmbjug5ub6pi6@4ax.com...
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.
>
> Cheers
> Nick

Re: 10W30 vs 10W40 in a 2002 TJ
 

On Apr 2, 12:37 pm, Nick <nick@nospam_nrdavis.demon.co.uk> wrote:
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.
>
> Cheers
> Nick

I run 10w30 90% of the time in my TJ. But when I make trips out to
the colorado river where the temps hit 120+ on he AZ/CA border I use
10w40. I have heard some horror stories in other groups regarding
10w40 with too many polmers being added which makes the oil break down
quicker. I don't buy into it. Just change your oil at regular
intervals and you should be fine even if you do run 10w40.

In fact I have an over worked 150k miles dodge neon that I beat up on
a 90 mile commute every day, and run 10w40 on the smoking hot days of
socal desert summer. Never had any issues with this engine. Maybe
I'm just lucky.

Re: 10W30 vs 10W40 in a 2002 TJ
 

On Apr 2, 12:37 pm, Nick <nick@nospam_nrdavis.demon.co.uk> wrote:
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.
>
> Cheers
> Nick

I run 10w30 90% of the time in my TJ. But when I make trips out to
the colorado river where the temps hit 120+ on he AZ/CA border I use
10w40. I have heard some horror stories in other groups regarding
10w40 with too many polmers being added which makes the oil break down
quicker. I don't buy into it. Just change your oil at regular
intervals and you should be fine even if you do run 10w40.

In fact I have an over worked 150k miles dodge neon that I beat up on
a 90 mile commute every day, and run 10w40 on the smoking hot days of
socal desert summer. Never had any issues with this engine. Maybe
I'm just lucky.

Re: 10W30 vs 10W40 in a 2002 TJ
 

On Apr 2, 12:37 pm, Nick <nick@nospam_nrdavis.demon.co.uk> wrote:
> Is their a serious downside to using 10W40 as opposed to 10W30 in a
> 2002 TJ as I appear to have a lot more choice of oils at this weight
> than the 10W30 in full synthetics. I was reluctant to go down to the
> 0W30 & 5W30 unless anyone has an opinion to the contrary as I do not
> need that amount of cold weather starting capability.
>
> Cheers
> Nick

I run 10w30 90% of the time in my TJ. But when I make trips out to
the colorado river where the temps hit 120+ on he AZ/CA border I use
10w40. I have heard some horror stories in other groups regarding
10w40 with too many polmers being added which makes the oil break down
quicker. I don't buy into it. Just change your oil at regular
intervals and you should be fine even if you do run 10w40.

In fact I have an over worked 150k miles dodge neon that I beat up on
a 90 mile commute every day, and run 10w40 on the smoking hot days of
socal desert summer. Never had any issues with this engine. Maybe
I'm just lucky.