10W40 GTX to 15W40 Rotella T Small Block Chevy

[RDYER3]

hey been pondering with the idea of switching, been using 10W40 GTX for while in a 350 in 88 chevrolet pickup, motor has about 160K on it, been thinking of switching to Rotella 15W40 wondering what other peoples thoughts would be on this? Thanks

 

[cryption]

For what purpose? Do you consume oil?

 

[RDYER3]

light hauling, stop and go traffic, using about a quart on 3K change,idling hot in traffic @ about 20 lb pressure goes up to 38-40 crusing, figured the 15-40 might be a good try

 

[UberxG]

I would use Rotella T5 10w30, its on the thick side and the additives in it would do well with your driving conditions.

 

[nazareth]

good oil. personal prefrence would be delvac but thats just me.

 

[jstutz]

Not that it is necessary but the 15w40 will do great in that application. Plenty of old 350 have run a long time on HDEOs. I think if you make the switch, you will be happy that you did and will probably stick with it. Try it and let us know what you think.

 

[RDYER3]

will give it a shot next oil change comin up to be done here in about a week or so.. will pass along my 2 cents once i try it.... just the thought it bein 90+ here in the summer sometimes and low 20s here in winter figured 15W40 be a good choice..Thanks again for the input

 

[Steve S]

In the winter the oil would be kind of thick if you do short trips when it gets close to 20* other than that it is a great oil . Give it a try.

 

[chubbs1]

Originally Posted By: Steve S
In the winter the oil would be kind of thick if you do short trips when it gets close to 20* other than that it is a great oil . Give it a try.


+1 maybe wait until spring, it may be another one of those icy winters and you get a better cold flow with the 10W. Those are tough trucks though.

 

[TedT]

Used 15w40 in my 89 with a 350. Was OK but cranked noticeably slower and took a little longer to get oil pressure, but always started quickly. In Pa. it gets colder at times.

 

[JDD]

Originally Posted By: UberxG
I would use Rotella T5 10w30, its on the thick side and the additives in it would do well with your driving conditions.



+1
Rotella T5 is a nice choice for an older 350.