blending different oils, makes a good combo?

[ziggy]

i had read a few times here, some poeple like to blend their oils, say a quart of Mobil 1, ( all 5w30) , wih lets say, a quart of havoline synthetic, a quart of pennzoil platinum, a quart of motorcraft blend or synthetic, and half of one or the other. what does that do? ius it better or wrose, for an engine, with so many blends like that? if its good! what would work!

 

[thunderchild]

Well as far as blending goes, I need 6 quarts of oil for my truck. I use the 5 quart jugs of Supertech synthetic 10w30. I then add the 1 extra quart needed by using up my supply of M1 T&S 5w-40. No complaints and the truck seems to like it. Very smooth running engine. Plus, I like the extra detergent in the T&S.

 

[Fatboymoe]

I do this with my Toyota Echo. I use 2 qts of Supertech syn. 10-30 and 1.75 qts of Mobil 1 10w30 with 4 oz of VSOT. I did use GC for awile, but lost almost 3mpg, which I have regained with this mixture.

 

[m2200b]

You only have to be a good mixer if you want to go farther than 5000 miles on your home brew.

 

[SMILEY]

I am running a 3:2 ratio of Delo 15-40 and Motorcraft synthetic blend 5-20. The idea is to get a higher concentration of the anti wear addatives (Delo) that are being taken out due to regulations but yet maintain an oil close to a 30 weight which will have some synthetic properties.

I will be posting a used oil analysis with this blend in a couple months.

 

[MIAMI-DADE]

I was always told this is a bad thing to do as different brands have different detergents and doing this you won't get the proper additives to protect your engine by mixing different brands of oil as you will be downgrading the oils by mixing them together.

Bottom line it seems using one brand per oil change makes the most sense.But to each their own.

 

[beanoil]

There are lots of different reasons to blend. Some look for certain properties in the final mix, like Smiley. Some look for a certain percentage of a synthetic component, such as EOP or PAO. Some are blending to achieve a certain viscosity, like a "thick" 30 weight, or an oil that is at the top or bottom of a viscosity range. Some blend for cost. Personally, I blend to experiment. To boldly go......you know the rest. Currently, I'm running a 50/50 of Havoline 5w20, and Delo straight 30 after learning of the Delo for .99 a gallon at the Zone. The 5-20 was for a little better flow while cold. My Focus is starting normally, even in 20 degree weather, and just gave me an all time high of 31 plus MPG on a long trip on this brew. This meets a lot of goals; good mileage, good protection, added detergents of a HDEO, cheap, (total oil change was less than 5.00 with filter). So, mix on brewmasters, find what works for your particular app, and run it!

 

[Ray H]

I'm against haphazard blending. Having said that, for my prior oil change I ended up with two quarts of M1 Tri-Synthetic SH, and four other differing brands of conventional in partial bottles (all properly capped) ranging from SH through SL I found during overdue garage cleaning. The only common denominator among these oils was the 10w30 viscosity rating. It stayed in the car (Hyundai 2.7L V6) for nine months (3,000 miles). The UOA came back very favorably. I won't do it again, but I doubt any harm will come from intentional witches' brews. My random brew was straight from he11.

 

[the_oil_dealer]

I looooooooove blending!

 

[SMILEY]

Has anyone ever seen a bad UOA from a home brew?

 

[BrianWC]

I just threw together some leftovers into one jug. The contents were:

20 oz Mobil 1 Truck and SUV 5W40
17 oz Mobil 1 Extended Performance 5W30
15 oz Supertech 5W30 (conventional)
15 oz Castrol GTX 5W20
8 oz Castrol Tection Extra 15W40

The resulting mix pours really well but has a distinct conventional oil smell. By the way, using the scientific jug swishing method, the Mobil 1 Truck and SUV seemed to be the thickest of the oils. Which is odd considering the 15W Castrol.

 

[GoldenRod]

So what are you going to do with this pinya colada Brian?

 

[John_E]

Since the 1996 Audi V6 12V was rattling briefly on cold starts, I now mix Castrol GTX 5w30 and GTX 10-40, with more of the former in the winter and mostly latter in the summer.