I have an 89 mustang with 136000 kilometers. I have always run casrtol gtx 10w30 or syntec 10w30. Is this good for the car? I want to know what the best oil for this car is. thanks in advance.
I'd use 15W40 HDEO in the summer on that engine.quote:
Originally posted by Patman:
You'd probably get better results using 10w40 GTX in the summer over the 10w30.
We don't have a very big selection of 15w40s up here in Canada though.quote:
Originally posted by brianl703:
I'd use 15W40 HDEO in the summer on that engine.quote:
Originally posted by Patman:
You'd probably get better results using 10w40 GTX in the summer over the 10w30.
We are on the same page! I am currently running the last of my Pennz 10W-30 supply as an Rx rinse. 1500 miles to go, and then the GC goes into my 302.quote:
I'm switching my 5.0L to German Castrol as soon as I'm done with the A/Rx rinse.
Funny. We also picked the same oil for the Auto/Rx.quote:
Originally posted by novadude:
We are on the same page! I am currently running the last of my Pennz 10W-30 supply as an Rx rinse. 1500 miles to go, and then the GC goes into my 302.quote:
I'm switching my 5.0L to German Castrol as soon as I'm done with the A/Rx rinse.
The Owner's Manual for an 89 CrownVic calls for 10W30 at temperatures regularly above 0F, and 5W30 at temperatures regularly below 0F. It shows the 5W30 OK up to 60F.quote:
Originally posted by mustang:
an 89 mustang .... the best oil [?]
5W-30 was recommended at the time for my 5.0L Mustang when I bought it new in 1990...quote:
Originally posted by brianl703:
Ford issued a TSB recommending 5W-30 for all temperatures for many vehicles dating back to 1989, and among them was the 1989 Mustang with the 5.0
If I find the TSB I'll post a link to it.