Royal Purple or Red Line?

[Walker]

One better than the other? I'm doing all my fluids (diffs, tran. and tcase) this weekend. I've narrowed it down between these two brands.

 

[RBeard]

I have been using RP for 100K and am very happy with oil sample results,availability,etc.

 

[drag racer]

they are both very good products - you can't go wrong with either. Red Line is more expensive.

 

[Hohn]

I would use Redline in all the driveline stuff and RP in the engine... .....



I have used the Redline oil, and while the engine was VERy happy with it (2psi more boost, 1. 5 mpg increase), I just had to balk the next time at the going rate of $28-$30 a gallon!!



I am using the PB extreme now until I decide for sure whether to go dino or syn... .





HOHN

 

[Cooker]

Personally I like the Royal Purple, but both are very good oils. If you are torn between the two I would use the one that is less expensive and easier to get.

 

[redram]

Originally posted by Walker

One better than the other? I'm doing all my fluids (diffs, tran. and tcase) this weekend. I've narrowed it down between these two brands.

Both good products - RP 15W40 is API licensed CI-4/SL whereas the Redline product is not.



Might sway you to use the API Licensed product as you have a 2001 and probably still in warranty - meaning that RP can provide a paper trail if your dealer wants to be difficult.

 

[DEZLPWR]

I just put Redline MT-90 in my NV4500 and I am VERY impressed. Shifting is noticibly smoother than the factory fill Castrol Syntorq. Most people who have made this switch did not notice any change. I did, and am glad I went with the MT-90. I saved a good amount of money too!

 

[swampfox]

I put RP in the front and rear diffs. about 10,000 miles ago. no problems. I used the mopar fluid fir the transfer case. That cost $27/gal from the dealer.