I have tried both brands of oil and have noticed that the castrol one doesnt burn as fast, meaning that every couple off weeks I'd have to add extra motor oil. with the mobil 1 it seems that I have to constantly add oil to the motor.

The castrol synthetic doesnt look as clear as the mobil one does anyhow.

for some reason I usually stick with mobil 1 but since pep boys didnt have mobil 1 I went with the castrol brand instead...

Guys have you compared other brands to mobil 1?

 

https://honda-tech.com/zerothread?id=163845

 

Mobil 1 does burn a lot. Personally I use Castrol GTX non-synth and my motor is doing just fine.

 

Same story for me with the mobil1 to castrol syntec switch. As soon as I switched to Castrol I didn't loose nearly any. Its nice to find one that you dont blow through so fast, especially at the price Mobil1 is.

I went an even different route with agip by advice from a good friend, and dont lose nearly any even at the track now.

A.

 

My ITR had done 120,000 kms (ie end of warranty) - before I swapped from the OEM Honda FEO mineral oil (10w-30) to Castrol 'Formula R' synthetic oil (5w-30).

I just ticked over 125,000 kms and I'm happy to report that the Castrol has not required any top ups until the weekend just past.... where I did a 'fast' mountain drive, which kept the car in VTEC (between 6-9K rpms) for several hours over the warm day!!

The colour of the oil is still quite 'golden' - which is pretty good, considering its the first change since swapping from the mineral Honda oil - and my friends driving behind, don't report me blowing any smoke (even under constant high revs).

Price wise, here in Australia the Castrol costs AU$50 for 5 Lts vs. $80 for the Mobil 1.... so I know which one I'd rather be replacing more often and I don't believe there would be a 'noticable' difference between them to justify!?

 

Nice topic.. I've been thinking about trying the castrol synthetic 5w30 rather than mobil1.

Does anyone know if the engine protection is any better? Or anything really?

 

I said it once and I'll say it again....castrol ownz

 

I use Castrol Syntec Blend for more than 18 months......almost NO oil burn at all.

 

Castrol GTX dyno is great stuff.

Castrol Synthetic....from what I'm reading Mobil 1 is still a better blend.

 

my Mobil 1 5W30 synthetic doesnt burn

 

GTX is a good conventional. Not exactly sure the specifics of Syntec but it is NOT worth the price ($4.50+ per quart). The best OTC synthetic is Mobil1.

 

how much does the Agip stuff cost?

 

mine 2

 

regular castrol gtx is all my motor sees and ever will see. can justify the extra money for synthetic and my motor is doing just fine

 

Used to use Castrol and Agip in my Alfa Romeo.. Good stuff.. My friend/mechanic can get Agip.. Need to find out how much..

 

Castrol Syntec 5w30 is alot thinner at 100*c compared to M1 5w30, maybe your engine feels more free with the thinner 30 weight in the sump. Doughtful that you would be able to feel it on the butt dyno, but anything is possible.

 

Mobil 1 is notorious for burning off. I don't use synthetic in any of my cars. Castrol GTX has worked great for me. I use that stuff for my track cars as well as just my daily drivers.

I think M1 is on sale at Costco for like $23 for 6 quarts.
I know Castrol Edge Ti is on sale at Advance Auto for $25.99 (after $7 mail in) with a K&N oil filter. That's a pretty smokin deal.

 

I have the same issue in my daily driver TL, for some reason Mobil1 just likes to burn off.... must have a different property to it... castrol FTW

 

Holy 8 year old thread bump

WTF

 

LOL^^

Euro Formula Castrol 0W-30 > Castrol 5W-30 > M1 anything...

 

Where is this fact from?

 

You can look up the oil specs on the oil websites. The CST at both 100C and 40C should be there. I don't know if Castrol really is thinner (or which of the 10 different castrol 5w30's they are talking about), but I do know every 5w30 has a slightly different viscosity at 100C.