10W-40 Valvoline Maxlife really that bad?
 

My dealer has just filled my ‘99 Cherokee with Valvoline Maxlife
10W-40

The engine has about 60K and I am using my jeep in the tropics all
year.

One only reads horror stories about 10W-40 due to extensive polymer
brake down.

Should I change the oil immediately again, or would it be ok to drive
until the next interval 3,000 miles from now?
Would synthetic oil be the best choice for tropical use, or should I
use a 20-50?

Re: 10W-40 Valvoline Maxlife really that bad?
 

What is wrong with the 10W30 recommended by the manufacturer? That is what
I use in my Jeep and in my Suburban in Colorado, and it gets pretty darn hot
here in the summer. The thermostat fixes the operating temperature at a set
value anyway.

Earle

"Robert Goldpalm" <goldpalm@loxinfo.co.th> wrote in message
news:68468edd.0311120448.397b55b3@posting.google.c om...
> My dealer has just filled my '99 Cherokee with Valvoline Maxlife
> 10W-40
>
> The engine has about 60K and I am using my jeep in the tropics all
> year.
>
> One only reads horror stories about 10W-40 due to extensive polymer
> brake down.
>
> Should I change the oil immediately again, or would it be ok to drive
> until the next interval 3,000 miles from now?
> Would synthetic oil be the best choice for tropical use, or should I
> use a 20-50?

Re: 10W-40 Valvoline Maxlife really that bad?
 

What is wrong with the 10W30 recommended by the manufacturer? That is what
I use in my Jeep and in my Suburban in Colorado, and it gets pretty darn hot
here in the summer. The thermostat fixes the operating temperature at a set
value anyway.

Earle

"Robert Goldpalm" <goldpalm@loxinfo.co.th> wrote in message
news:68468edd.0311120448.397b55b3@posting.google.c om...
> My dealer has just filled my '99 Cherokee with Valvoline Maxlife
> 10W-40
>
> The engine has about 60K and I am using my jeep in the tropics all
> year.
>
> One only reads horror stories about 10W-40 due to extensive polymer
> brake down.
>
> Should I change the oil immediately again, or would it be ok to drive
> until the next interval 3,000 miles from now?
> Would synthetic oil be the best choice for tropical use, or should I
> use a 20-50?

Re: 10W-40 Valvoline Maxlife really that bad?
 

What is wrong with the 10W30 recommended by the manufacturer? That is what
I use in my Jeep and in my Suburban in Colorado, and it gets pretty darn hot
here in the summer. The thermostat fixes the operating temperature at a set
value anyway.

Earle

"Robert Goldpalm" <goldpalm@loxinfo.co.th> wrote in message
news:68468edd.0311120448.397b55b3@posting.google.c om...
> My dealer has just filled my '99 Cherokee with Valvoline Maxlife
> 10W-40
>
> The engine has about 60K and I am using my jeep in the tropics all
> year.
>
> One only reads horror stories about 10W-40 due to extensive polymer
> brake down.
>
> Should I change the oil immediately again, or would it be ok to drive
> until the next interval 3,000 miles from now?
> Would synthetic oil be the best choice for tropical use, or should I
> use a 20-50?

Re: 10W-40 Valvoline Maxlife really that bad?
 

whats wrong with 10W40? I've been using it for 12 years (valvoline the whole
time and maxlife when it can out) 165 K miles so far.....I also use it in my 5
speed, per the request of the reman company.....no problems, shifts great works
great.

Re: 10W-40 Valvoline Maxlife really that bad?
 

whats wrong with 10W40? I've been using it for 12 years (valvoline the whole
time and maxlife when it can out) 165 K miles so far.....I also use it in my 5
speed, per the request of the reman company.....no problems, shifts great works
great.

Re: 10W-40 Valvoline Maxlife really that bad?
 

whats wrong with 10W40? I've been using it for 12 years (valvoline the whole
time and maxlife when it can out) 165 K miles so far.....I also use it in my 5
speed, per the request of the reman company.....no problems, shifts great works
great.

Re: 10W-40 Valvoline Maxlife really that bad?
 

A thicker or heavier weight oil can cause more problems than a light weight
oil, especially when the light weight is what is recommended by the
manufacturer. Greater load on the oil pump, less flow to the bearings; the
following is from http://geneberg.com who spent decades designing aircooled
VW engines for the strip and street.

"Another concern is the weight of the oil. Remember, the heavier the oil,
the less it lubricates. We run 20 weight in our race engines and 10-30
weight in all street engines. Only if the temperature is constantly above
80-85 degrees would I consider 10-40 weight. 5-30 should be used when
temperature falls to below 45 degrees. For freezing temperatures straight 10
weight would be my choice."

Earle

"Onlyinajeepcj7" <onlyinajeepcj7@aol.com> wrote in message
news:20031112110146.11742.00000080@mb-m22.aol.com...
> whats wrong with 10W40? I've been using it for 12 years (valvoline the
whole
> time and maxlife when it can out) 165 K miles so far.....I also use it in
my 5
> speed, per the request of the reman company.....no problems, shifts great
works
> great.

Re: 10W-40 Valvoline Maxlife really that bad?
 

A thicker or heavier weight oil can cause more problems than a light weight
oil, especially when the light weight is what is recommended by the
manufacturer. Greater load on the oil pump, less flow to the bearings; the
following is from http://geneberg.com who spent decades designing aircooled
VW engines for the strip and street.

"Another concern is the weight of the oil. Remember, the heavier the oil,
the less it lubricates. We run 20 weight in our race engines and 10-30
weight in all street engines. Only if the temperature is constantly above
80-85 degrees would I consider 10-40 weight. 5-30 should be used when
temperature falls to below 45 degrees. For freezing temperatures straight 10
weight would be my choice."

Earle

"Onlyinajeepcj7" <onlyinajeepcj7@aol.com> wrote in message
news:20031112110146.11742.00000080@mb-m22.aol.com...
> whats wrong with 10W40? I've been using it for 12 years (valvoline the
whole
> time and maxlife when it can out) 165 K miles so far.....I also use it in
my 5
> speed, per the request of the reman company.....no problems, shifts great
works
> great.

Re: 10W-40 Valvoline Maxlife really that bad?
 

A thicker or heavier weight oil can cause more problems than a light weight
oil, especially when the light weight is what is recommended by the
manufacturer. Greater load on the oil pump, less flow to the bearings; the
following is from http://geneberg.com who spent decades designing aircooled
VW engines for the strip and street.

"Another concern is the weight of the oil. Remember, the heavier the oil,
the less it lubricates. We run 20 weight in our race engines and 10-30
weight in all street engines. Only if the temperature is constantly above
80-85 degrees would I consider 10-40 weight. 5-30 should be used when
temperature falls to below 45 degrees. For freezing temperatures straight 10
weight would be my choice."

Earle

"Onlyinajeepcj7" <onlyinajeepcj7@aol.com> wrote in message
news:20031112110146.11742.00000080@mb-m22.aol.com...
> whats wrong with 10W40? I've been using it for 12 years (valvoline the
whole
> time and maxlife when it can out) 165 K miles so far.....I also use it in
my 5
> speed, per the request of the reman company.....no problems, shifts great
works
> great.