I remember where I grew up in the 90's and 2000's, oh how Mobil 1 made the local gear-head wrencher feel like a NASCAR driver. Modern Synthetic Blends are strong contenders I wonder why Blends were labeled as a heavy-duty oil for cars & trucks that tow and are pushed hard including those turbocharged. If it were not for GDI and start-stop Blends could easily handle 5,000-7500 especially highway miles. As we know even the entry level Synthetics can struggle with GDI, turbocharged, start-stop engine designs.
Synthetic Blend Oil
- Thread starter danjak26
- Start date
The whole thread is a bit silly considering that nearly all today's synthetics are either completely or majority Group III, which means that the molecular structure of the hydrocarbon is extremely similar to or exactly like a Group I or Group II conventional. It's not like back when Mobil 1 was introduced and at the introduction was essentially an improperly additized Group IV that caused issues for some. With today's Group III synthetics you get an improved viscosity index, higher saturation and lower contaminates. None of these contribute to supposed problems with a synthetic base stock.
Even today's majority Group IV synthetics are not the same and contain proper additives to rectify the issues from 50 years ago.
Even today's majority Group IV synthetics are not the same and contain proper additives to rectify the issues from 50 years ago.
This is correct couldn't agree or say it better myself
Are you sure you’d want that synthetic blend tar gumming up the engine for 500 miles? Better yet, bring some ramps and fresh synthetic oil to the dealership lot before you drive it off.
LoL, You're a funny guy
I went from 5W-30 in my 2005 impala 3.4 V6 to synthetic blend around 80k. Car ran cooler,quiet. 101,000 miles now. No leaks etc. That said just trying to sell it mainly for engine and transmission due to frame rust and a shop further compounding rust issue. Runs super smooth and quiet.
Top brands only from day one. Junkers want to give me $400 bucks but not gonna happen. Engine needs a good home. Never beat on,Fluids changed more than required by me.
Top brands only from day one. Junkers want to give me $400 bucks but not gonna happen. Engine needs a good home. Never beat on,Fluids changed more than required by me.
To the oil experts: But why is that?
Why 10W-40 is not widely spread as full synthetic. And it wasn't even back in the days when most cars were running it.
I think, I've read on here some time ago that it's something related to its poor base oil quality or something like that.
What really is that that oil is not popular as full synthetic?
OVERKILL
$100 Site Donor 2021
It's cheap to make as a non-syn. If you are making a syn, you end up with a 5W-40 so easily that there's really no point in making it. Also, basically nothing spec's 10W-40, further obviating any need for a synthetic version.
Just not enough demand. AMSOIL doesn't even make it in SS. Only XL.
OP, I forgot HPL. They make a fine 10W-40. https://www.advlubrication.com/coll...assenger-car-motor-oil?variant=31346427559959
Edit: @OVERKILL keeps snaking me on the replies lol
They should make a 5w40 SS.
This is 100% true, as long as frequent oil change is utilized.
But with turbo charge motors that run real hot, higher temp capable oils keep the carbon build up down, in ring lans , oil rings ect.
there's also a differnce between a motor that runs 300,000 mile in 2 years, verses one that took 20 years. Lots more issues develop with 20 year old venture.
420,000 miles in 18 years. Still going strong. Even survived my daughter. She tried to kill it and failed!
I had an 02’ Buick century with the 3.1 in it and I only ran Valvoline MaxLife in it and it was a great oil with zero issues.
Why is that? What do you mean?
It's interesting because some people run it in their 4T motorcycles and garden equipment.
Foaming all through the deepstick, repeatedly.
He is looking for Full Synthetic 10W-40 which is hard to find, except some boutique oils. In that case he and his engine will be much happier with Full Synthetic 0W-40 or 5W-40 for just about $5.00 extra over the Semi Synthetic MaxLife 10W-40.
I used MaxLife 5W-30 back in the days because I didn't know much about oils and was cheap on the oil too. I drove a 90's car which was not spec'd for Full Synthetic and I was afraid that it may leak oil if I go to synthetics which actually was an mistake.
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I’ll be using 5w-30 GTX High Mileage (blend) in the kiddos beaters on their next changes. Both vehicles see less than 5,000 miles a year. Got 10 qt for $20 after rebate. Nothing wrong with blends.