Synthetic oil question
Thread Starter
JK Enthusiast
Joined: Jun 2011
Posts: 288
Likes: 0
From: Katy, TX
Synthetic oil question
I have an 08 jk with almost 20k on it. Just switched over to mobil 1 synthetic and lucas oil stabilizer today. Bottle says its good for 15,000 miles. How long does everyone really go between synthetic changes 
JK Junkie
Joined: Dec 2008
Posts: 2,191
Likes: 6
From: Boston, MA
It's not the mileage so much as the "duty cycle". I follow my OCI and use M1. The only real way to know is to have a Used Oil Analysis from e.g., Blackstone Labs.
Consider this rough example (lifted from a BITOG post, link below)
Mileage has little to do with how oil is monitored, here is the idea:
Car 1:
If you drive 90% of the time on the highway lets say 1500 rpm an hour.
you engine sees 90,000 revolutions in that hour and you drive 60 miles.
Car 2:
If you drive around town, profiling with 90% of your driving in 1st, 2nd, and 3rd gear, taking 4,000 rpm on average. That's 240,000 revolutions of the engine in 1 hour and you only drive 30 miles.
Taking this out to 3 months , 90 days:
Car#1 3,600,000 rpms and 5400 miles
Car#2 21,600,000 rpms and 2700 miles
This represents 1 hour of driving a day for 90 days.
Car #2 sees 6 times the engine duty of car #1 and Only half the mileage
http://www.bobistheoilguy.com/forums...1735142&page=1
Consider this rough example (lifted from a BITOG post, link below)
Mileage has little to do with how oil is monitored, here is the idea:
Car 1:
If you drive 90% of the time on the highway lets say 1500 rpm an hour.
you engine sees 90,000 revolutions in that hour and you drive 60 miles.
Car 2:
If you drive around town, profiling with 90% of your driving in 1st, 2nd, and 3rd gear, taking 4,000 rpm on average. That's 240,000 revolutions of the engine in 1 hour and you only drive 30 miles.
Taking this out to 3 months , 90 days:
Car#1 3,600,000 rpms and 5400 miles
Car#2 21,600,000 rpms and 2700 miles
This represents 1 hour of driving a day for 90 days.
Car #2 sees 6 times the engine duty of car #1 and Only half the mileage
http://www.bobistheoilguy.com/forums...1735142&page=1
Thread Starter
JK Enthusiast
Joined: Jun 2011
Posts: 288
Likes: 0
From: Katy, TX
It's not the mileage so much as the "duty cycle". I follow my OCI and use M1. The only real way to know is to have a Used Oil Analysis from e.g., Blackstone Labs.
Consider this rough example (lifted from a BITOG post, link below)
Mileage has little to do with how oil is monitored, here is the idea:
Car 1:
If you drive 90% of the time on the highway lets say 1500 rpm an hour.
you engine sees 90,000 revolutions in that hour and you drive 60 miles.
Car 2:
If you drive around town, profiling with 90% of your driving in 1st, 2nd, and 3rd gear, taking 4,000 rpm on average. That's 240,000 revolutions of the engine in 1 hour and you only drive 30 miles.
Taking this out to 3 months , 90 days:
Car#1 3,600,000 rpms and 5400 miles
Car#2 21,600,000 rpms and 2700 miles
This represents 1 hour of driving a day for 90 days.
Car #2 sees 6 times the engine duty of car #1 and Only half the mileage
http://www.bobistheoilguy.com/forums...1735142&page=1
Consider this rough example (lifted from a BITOG post, link below)
Mileage has little to do with how oil is monitored, here is the idea:
Car 1:
If you drive 90% of the time on the highway lets say 1500 rpm an hour.
you engine sees 90,000 revolutions in that hour and you drive 60 miles.
Car 2:
If you drive around town, profiling with 90% of your driving in 1st, 2nd, and 3rd gear, taking 4,000 rpm on average. That's 240,000 revolutions of the engine in 1 hour and you only drive 30 miles.
Taking this out to 3 months , 90 days:
Car#1 3,600,000 rpms and 5400 miles
Car#2 21,600,000 rpms and 2700 miles
This represents 1 hour of driving a day for 90 days.
Car #2 sees 6 times the engine duty of car #1 and Only half the mileage
http://www.bobistheoilguy.com/forums...1735142&page=1
