HI.
First post. I recently acquired a 1997 Land Rover Discovery, 4.0 liter (Buick) V8, flat tappet design. I have owned three of these trucks before, but none in the last 12 years. To be honest I can not remember what type of oil I ran in the motor and when I began searching for recommendations on summer/winter oils, it was an eye opener and most directed me here for specific answers.
I live in western NJ, so I see a fairly wide range of temperatures. With regards to the motor on the truck and its condition, it is in the midst of a rebuild from the block up. So all seals/gaskets will be refreshed. It seems most folks with these motors are running Rotella 15w/40 dino oil with excellent results. My only concern with the Rotella 15w/40 is cold winter temps.
The Rotella T6 5w/40 full synthetic is an option for the winter but I would be switching back to the dino oil in the summer.
Another option I was considering after initial break in, to run the Rotella T5 semi-syn 10w/40 in the winter and the Rotella T4 dino 15w/40 in the summer?
Thank you for the help and advice.
Matt
First post. I recently acquired a 1997 Land Rover Discovery, 4.0 liter (Buick) V8, flat tappet design. I have owned three of these trucks before, but none in the last 12 years. To be honest I can not remember what type of oil I ran in the motor and when I began searching for recommendations on summer/winter oils, it was an eye opener and most directed me here for specific answers.
I live in western NJ, so I see a fairly wide range of temperatures. With regards to the motor on the truck and its condition, it is in the midst of a rebuild from the block up. So all seals/gaskets will be refreshed. It seems most folks with these motors are running Rotella 15w/40 dino oil with excellent results. My only concern with the Rotella 15w/40 is cold winter temps.
The Rotella T6 5w/40 full synthetic is an option for the winter but I would be switching back to the dino oil in the summer.
Another option I was considering after initial break in, to run the Rotella T5 semi-syn 10w/40 in the winter and the Rotella T4 dino 15w/40 in the summer?
Thank you for the help and advice.
Matt