Sorry for busting out this thread without a search but I am limited on time.
A local salesman has a case of Royal Purple 20-50W that is $10 a qt.
I can get it tonite (yea I know, "what will it take for you to drive this beauty home TONITE!!!")
But he has to make an oil order first thing Tomorrow AM and wants to show he sold more oil. He has one case of 12 qts for $104 out the door which is $10 than TEN qts of the mobil 15-50 he has.
Is Royal purple any good? I have 30 minutes till closing.

thanks in advance.

 

I have had good luck with it.

 

It is what we use on all my cars.

 

I find the royal purple at the local auto parts store here (cut rate auto parts) at about $8 a quart for the 20/50...
Use it in both the GT and the track car..good stuff...

 

I found that with it I have better oil pressure in summer Fresno heat.

 

Then I am on my way, thanks Gents for busting out the Help!!!!Plus if Roger says its good it must be!

 

I started using it 6 years ago, ditched mobil 1 back then and never looked back.

 

IMO overpriced.

For the money I would use Redline, and in fact I do in two of the cars.
I still have a few miscellaneous bottles of RP on the shelf in various viscountcies I now reserve for the lawn mower.

Last year I switched the 928's to Brad Penn, this year back to VR-1 due to the rebate.

 

I just paid $105 for 12 qts

 

You got to be a real baller to run Royal Purple in your lawn mower.
Kind of shocked that your summer is long enough to need a lawn mower.

 

The M1 15w-50 is a goner around here (just when I said my local Walmart was keeping me well stocked, they quit) and have switched to RP 20w-50 for everyone here.

 

I started using RP back in 2001 after chatting with the reps at SEMA that year.
That was around the time Castrol (my #1 oil at the time) was going through the accusations of not selling "real" synthetic and Mobil 1 was following suit.

Then came the experiment with DELVEK 5w-40, following by VR-1 until I switched to Brad Penn last year.

This has left quite a casserole of mixed oil bottles in my garage

 

You know what, I dont know if I trust Mobil one that much anymore. Its changed and I dont know how close it is to the oil we used to trust out here in the desert. Temperatures are high, for long periods of time.
It doesnt stop desert dwellers from going to Death Valley for a picnic in August. So we need Oil that is worthy of that trip. I need to do some research.

On one of my Dirt Bike forums we some how we got a PhD from some Cal State University to do a HUGE in-depth study of all the oils we were using in Motocross racing. It was a FANTASTIC study. The problem? its probably out of date now.

We need some enthusiast who has the means the money and the laboratory to do the analysis then publish it for us.

 

Were suppose to put oil in the lawn mower!?

 

Yeah, the M1 15w-50 is no longer found at WalMart, or anywhere around here. Went with the M1 10w-40 HM on the wife's S4 and the M1 10w-30 on my daughter's Tuscon. With the heat down here, I've always felt more comfortable with a 40 or 50 weight for the summer time. Guess I could give the RP a try if they have a 15w-50 cause I sure like that multi-weight combo.