Using Mobil 1 in 75 Twin Spark engine

[GioGTVTS]

Hi, I am new to posting, but have been a member for quite sometime. I am currently using Penrite HPR 30 in by car (Alfetta GTV with 75 Twin Spark engine). I would like to try a fully synthetic oil like Mobil 1 15W - 50 with my next oil change. Has anyone with a 75 2L Twin Spark used this oil before and what is/was your experience? Appreciate any advise. Cheers. John

[Darryl]

Why do you want to use it?

How many kms the engine done?

At a glance, once warmed up the Mobil 1 15W 50 will be substantially lower viscosity than HPR30.

I've use Penrite SIN 10 for the *higher* viscosity vs HPR30 when hot and lower at 40 degrees or so. But its in a worn engine... I *think* its reduced oil use and I *hope* its doing a good job of minimising further wear, but I could be kidding myself on both...

[GioGTVTS]

Hi Darryl, Reason for switch is mainly to reduce wear, although another benefit will be reduced power loss through lower friction. The engine has done about 130,000kms. Hopefully, it may also reduce oil use. Currently my engine uses less than 1 lit per 5000kms.

[Tristan Atkins]

Hi GioGTVTS,

I've also got a GTV with a TS engine and I too looked a various synthetic oils.  The problem is most full synthetic's are designed for modern engines with tighter clearances. Considering the engine was designed for mineral oil, the HPR semi synthetic should be more than capable of doing the job.

I've always used HPR with both the original NORD and the TS engine whilst sprinting without issue and I highly recommend it to any Alfa owner.

[Gary Pearce]

Hi Darryl, the thing with oils is....everybody will have an opinion about the oil that they are using, and in the absence of problems they will all declare that their choice is the best.
Mobil 1 15w50 is a superior motor oil with very few peers. I don't support the argument that 'the engine was designed to use mineral oil' because if good quality synthetics were available 40 years ago we would have been using them then too. The 15w component will provide quicker oil delivery when cold and at operating temperatures the 50 will give serious protection at all speeds and temperatures with reduced friction. . (By way of comparison HPR30 is 20w60) In addition Mobil 1 is virtually impossible to breakdown under extreme temperatures and stress. Just ask Grant Tander. Another misconception often bandied around is the lack of zinc content in modern synthetic oils. In Mobil 1 there is no reduction in zinc with better than 1600 p/m. Use the Mobil 1.

[Brad M]

Just ask Grant Tander.

That would be Garth, I expect considering his recent victory at the mountain in the V8 SUPER "SEDAN TAXI" CARS.

[Neil Choi]

Hi Gary

I know you are not being biased.

Neil

[colcol]

Not wishing to be a smarty pants, but i purchased some Mobil 1 yesterday from Repco and it was 5-50, i think the other Mobil 1 is 0-30 for some Japanese cars, i remember looking at the viscosity that i purchased it was 5-50, and i needed 10-60, so i will run it in winter, its a good price at Repco at the moment $50 for 5 litres, just don't run it for 20,000 klms, Colin.

[Brad M]

I'm currently using Mobil 1 15w50 in a 147GTA, I went this way Gary's recommendation (hope he got the commission).

[colcol]

I just went and looked on my MOBIL 1 bottle and it said 5-50, not 15-50, is there a Mobil 1 that i don't know about as i have only seen 0-30 and 5-50, i am not trying to be a smarty pants, its just i have never seen 15-50, Colin.

[Jekyll and Hyde]

I just went and looked on my MOBIL 1 bottle and it said 5-50, not 15-50, is there a Mobil 1 that i don't know about as i have only seen 0-30 and 5-50, i am not trying to be a smarty pants, its just i have never seen 15-50, Colin.

5 seconds on Google.

http://www.mobil1.com.au/products/index.aspx

[Datso]

Pennzoil Platinum is cheaper and just a good as Mobil 1.
Mobil one has the biggest oil company to sponsor everyone.
Both fine oils but PP gets my pick for price cant go wrong.

[colcol]

Have not seen Mobil 1 15-50 at my local Repco, looked up specs, seemed good for pushrod engines, but not recommended by as many car company's as Mobil 1 5-50, but it gets back to what i keep asking, how do you know what a good oil is, unless we are petroleum Scientists, Colin.

[Gary Pearce]

Hi Col, I'm happy to talk to you about it at Winton if you like. Mobil1 15w50 is the race spec oil as used in V8 Supercars etc etc and is only available on special orders in 20 litre drums. It is without question the best oil money can buy with plenty of scientific tests to back it up. A good website to gain an understanding of oils is 'engineoilbible.com' . The 5w50 Mobil1 oil from Repco will be perfect for your car, giving instant protection on start up and unlimited protection when hot. The 0w30 is for new model modern cars and the 0w40 was specified by Holden for their HSV cars and the like. I think you would have to use a zinc/phosphorus additive in the Penzoil to bring it up to the Mobil1 spec.

[alanm]

Hi all,

For those of us on a budget, I wonder if it's better to change your oil with $40 Semi synthetic every 5000klms or change your $80 fully synthetic every 10,000 klms? I am going with the former option at the moment with my twin spark.

Al