Dino 5W30 vs full synthetic 10W30

[ST2008]

Hi guys.

I'm new here and I have two questions for you.

1st question: Where the search engine in the bobistheoilguy forum ?

2nd questions: Do somebody have any info regarding the viscosity of conventional 5w30 oil vs 10W30 full synthetic oil under freezing condition ?

Thx

 

[Revving2Redline]

Some 10w30 synthetics flow better than 5w30 conventional. Why not a 5w30 syn, or in your climate a 0w30 from Redline Oil,Mobil 1, or Amsoil?

 

[fdcg27]

It depends upon the temperature range you're asking about, but in real cold, a 5W qualified oil will always be thinner than a 10W qualified oil and it doesn't matter what basestock is used in either. No 10W-XX has better flow or lower viscosity in the cold tests than does any 5W-XX. If it did, then it would be a 5W-XX.
Whether this matters or not will depend upon where in that vast land to our north you live.
What are you looking at using in what engine and how cold does it get where you live?

 

[CT8]

These days you have to define the meaning of syn.

 

[ST2008]

The reason why I ask this is because I'm a Canuck and the owner manual of my 2000 Civic recommends conventional 5W30 oil for "all" season driving. But it also recommends as alternative 10W30 for weather over -10C.

I know the synthetic oil has better flow characteristic than conventional oil for the same weight. And I'm wondering if the 10Wxx synthetic has same flow characteristic or even better than the 5Wxx conventional. The reason why I'm planning to use 10W30 synthetic oil instead of 5W30 for my car is because the engine is getting old and I want to reduce its oil consumption.

 

[xshoex]

Do you know what the cause of consumption is? Pcv valve?

Also, how much oil are you losing?
I would stick with Valvoline MaxLife 5w30 imo

 

[ST2008]

Originally Posted By: xshoex
Do you know what the cause of consumption is? Pcv valve?

Also, how much oil are you losing?
I would stick with Valvoline MaxLife 5w30 imo


It depends how I drive and which oil I'm using. Generally, It burns almost nothing if I drive only in the city. For the hwy trips (90%), my engine can burn 1qrt/2k mile with Mobil 1 or 1qrt/3k miles with Pennzoil Platinum.

Regarding the PCV valve. can someone explain to me technically how a bad or clogged PCV valve can make engine burn more oil?

thx

 

[SilverC6]

Not a real decision here.

5w30 synthetic is readily available at the same cost as 10w30 synthetic.

Use the synthetic 5w30 if it's available.

 

[rideahorse]

It It sure is funny how everybody that uses syn oil their engines burn oil. I have never used syn oil in any of the farm or vehicle engines that I have owned and have never had to add oil between changes. There is no reason that you can't run 200,000 miles on an engine in a car and have it go 7,500 miles between changes and have to add oil. Just use a good HDEO conventional 10w30 oil in your cars and they will run for ever. Syn oil is about marketing.

 

[ST2008]

From my experience, synthetic oil makes a HUGE difference in a freezing condition, comparing to the conventional oil. Here, under -20C, the type of the oil, makes a significant difference between are you able to start the vehicle or not.

 

[TiredTrucker]

Unless you have one of those auto/pickups that the PCV design is terrible and they suck a lot of oil thru the PCV plumbing to the intake. On my 2006 Cadillac CTS 3.6L, I capture about 1 oz of oil every 100 miles from the PCV line. Almost mirrors exactly the amount of oil the engine is "using". Poor design if there ever was one. Been that way since day one.

I don't get all wrapped up in the conventional vs syn or the PAO vs faux synthetic nonsense. Just a waste of time in my book. I just ride the middle on most my oil choices.. a blend. I use 10w30 across the board... from my Yamaha portable generator, my John Deere 825i Gator, my New Holland tractor, my 2006 Caddy and my 2015 Silverado 2500HD, on up thru my semi truck with a Detroit engine. Different types of 10w30 depending on the application, but 10w30 nonetheless.

 

[Rolla07]

Since you use less with pennzoil, why not try their Full Synthetic 5w30 high mileage oil? I havent used it in my car yet (will eventually) but put some in my mower and it works well!

 

[Kuato]

Originally Posted By: ST2008
From my experience, synthetic oil makes a HUGE difference in a freezing condition, comparing to the conventional oil. Here, under -20C, the type of the oil, makes a significant difference between are you able to start the vehicle or not.


Agreed. In Canada during the winter, I'd be using either a 0w30 or a oil pan heater.


To anser 1st quesion: forum search engine sucks. Try just using Google for what you are looking for.

 

[Garak]

Originally Posted By: ST2008
1st question: Where the search engine in the bobistheoilguy forum ?

Use your Google-fu and use it to search BITOG itself, using your search terms in conjunction with the parameter of site:bobistheoilguy.com and away you go. I don't have a lot of problems with the native search here, but most hate it, and use the method I described.

Originally Posted By: ST2008
2nd questions: Do somebody have any info regarding the viscosity of conventional 5w30 oil vs 10W30 full synthetic oil under freezing condition ?

Are you facing a Vancouver "winter" or a Winnipeg winter? If you're in Winnipeg, for example, when you're pushing the MRV and CCS limits of the oil, a 5w30 will outperform a 10w30. At temperatures where both oils are pumpable, there will be no significant difference between the flow rates of the two 30 grades. In Vancouver, a 10w30 would work fine year round. In Regina, a 5w-XX is preferable.

 

[JC1]

Originally Posted By: ST2008
Hi guys.

I'm new here and I have two questions for you.

1st question: Where the search engine in the bobistheoilguy forum ?

2nd questions: Do somebody have any info regarding the viscosity of conventional 5w30 oil vs 10W30 full synthetic oil under freezing condition ?

Thx


The search feature is a link visible once you log in.

 

[barkingspider]

If your vehicle burns less on 10w30, then I would just use 10w30. You will be fine

 

[Swifty]

Depending on how much oil consumption you are seeing between intervals, if it is on the high side, I would find the least expensive Syn or Syn blend that will work for your situation. I wouldn't waste money on a high dollar synthetic(boutique oil)if you are constantly having to top it off.

 

[ARCOgraphite]

"Synthetic oil" (which likely is not what in the bottle) is not necessarily a better lubricant over-all than conventional.. Plus that syn and dino are typically both highly processed crude in current ILSAC spec.
API does not define "synthetic" it is ONLY a marketing term.

 

[Bgallagher]

Originally Posted By: barkingspider
If your vehicle burns less on 10w30, then I would just use 10w30. You will be fine


+1 Pennzoil makes a synthetic HM now. Best of both worlds

 

[Garak]

Originally Posted By: Bgallagher
+1 Pennzoil makes a synthetic HM now. Best of both worlds

Unfortunately, I don't believe that has yet made it to Canada. And, when it does, the price will undoubtedly be jaw dropping.