Mobil 1 in a 4AGZE

[..::ROCKETMAN::..]

This topic has probably been thrashed out in the past, but is anyone out there using Mobil 1 in their supercharged AW11 ? Depending who one talks to, one gets conflicting advice. One school of thought is that it should be perfect for supercharged or turbocharged engines. The others say that certain engines do not like it. I have 8ltrs of the stuff, which I got specifically for my MR2, but I'm not putting it in there until I've satisfied myself that it won't do any damage. I'm wanting to use it soon, when I get my full service done, so any stories you lot can tell will enable me to make an informed decision.

[Mr Revhead]

what grade is it?
for a high kay 4agze it maybe a bit thin

[sergei]

4AG(Z)E tend to burn anything thinner then 10W40.... so best value for money is Castrol Magnatec 10W40, I use in my AE101 and ST165 Castrol R 10W60, both have oil coolers, both done over 200k, none of them burn that oil...I used Mobil 1 5wXX 100k ago on my 101, and burned like fuel... then I switched to Castrol Magnatec and it was fine, I was not very happy with Mobil one as it cost twice as Castrol Magnatec...

[BlakJak]

Yeah, Agree that Magnatec is the go for an engine like that, Mobil 1 would be better suited to anything say 6 years old or newer to start with. Other cars by exception....

I'm sure you can find someone who'll take it off your hands...

[GOLDAE86]

My 86 runs the 5w, and has done 314,000kms.Has no problems on it

[beeker]

I run Castrol 10-50 in my targa car. I felt anything below 10 was a bit thin.

[method]

Ive heard lots of bad things about magnatec and turbod cars.

Most turbo cars should use 10w30ish oil allthough i run 10w40 in mine. I use penzoil, havnt had a problem with it.

Was going to get mobil1 but penzoil was cheaper and i hadnt heard anything bad about either. Mobil1 is a good oil, i wouldnt be worried about putting it in. What viscocity is it?

[CozmoNz]

WHat the hell is wrong with magnatec? i use it in my ze and it does SLOWLY get through it, but im pretty sure ive got an oil leak anyway!

no damage to it yet and i give it arse.

[BlakJak]

My ST185 didn't complain about magnatec at all.
Mobil 1 would have been overkill for a 1990, so I went semi-synth.
Ive never had a problem with Magnatec, even when I put it in my old 2E Corolla.

[Truenotch]

I run mobil 1 on my redtop 4age which gets a fair amount of thrashing and track work. It's fine but burns off a bit quick on long journeys.

[wanado13's]

I heard magnatec can be bad to because of how it is designed to be magnetically attracted to the metal in your engine. It's all good when you first put it in but when it gets old and you do a oil change alot of the oil stays in places along with the gunk you are trying to get rid of and consequently gunks up your engine. Thats what I heard anyways and it makes sense so I just use shell helix 10W 40 and it doesn't burn much but I wouldn't go any thinner

[sergei]

The Magnatec is not magnetically attracted to metal (it says "like magnet" on the box). Mobil 1 used to gunk up engines pretty badly (known fact, not just heard from some one). When you change oil, it does not matter what oil do you use or how well it sticks to parts, you will always have some left in the engine (in the head, and all the oil lines, walls etc.). Engines do gunk up not because, some oil remains there when you change oil, but because:
Short trips (never warms up)
Blocked PCV valve
No regular oil changes
Wrong/Bad oil
design fault in PCV system
etc.

I've seen lots of really low milage cars with gunked up engines (something like 10000-30000kms) with certified odometers... Most of them were like that because they ran oil wich came from factory (never had any oil changed)...

[Leon]

I put Mobil 1 in my old AW11 n/a once, instant major oil leaks. Switched to Penzoil, oil leaks stopped. Hmmmmm.

[Low_Aa63]

i used mobil 1 in my ae82.. wouldnt recomend as i beleive it led to my run bearing and said bearing being ejected from block at 120kph..

As for penzoil ive never had problems but havnt used it but from those who have used it ive been told to stay away and i plan to as i have seen 3 5mge's die on penzoil and one 20 valve so far..

[ROBODISCO_20v]

You people do realise that you can get mobil 1 in more than one grade? The most common one is 5W50 with is a bit thin when cold & a bit thick when hot for a 4AG. Most oil catalogues list 15W40 for 4AG's. Castrol GTX is a good one & it's turbo rated. I normall use that or Valvoline engine armour in my blk top. I would use ELF if i could find someone selling it in AK. Trade parts used to but I went there a few months back & all they had was total & motul & no 15w40 in either.

[vvega]

dose anyone attually know what the viscosity rating mean ??
not aimed at robdisco BTW

im not a fan of the efl oils though motul make some brillant oils


v

[ROBODISCO_20v]

Basically the lower number ie 5 is the oils viscosity when its cold(SAE use 40cel as a benchmark) & the higher number ie 50 is when its hot(SAE 100 d cel).
Here's some light reading on the subject
http://www.blackstone-labs.com/oil_viscosity.html
http://www.performanceoiltechnology.com ... ements.htm
http://www.advanceautoparts.com/english ... 101ov.html

[andrew]

but I'm not putting it in there until I've satisfied myself that it won't do any damage. I'm wanting to use it soon, when I get my full service done, so any stories you lot can tell will enable me to make an informed decision.

I don't see why it would damage your engine providing you ensure you have enough of it in there

FWIW, my old GZE (and I gave it death regularly, and I think the previous owners did too) went through a couple of litres of 5W-55 Mobil One every 7000kms. It used to blow a bit of blue smoke on startup fairly often, but went away once warm, and had a minor leak around the cam cover.

Having said that, the 3 or so 10 weight semi synthetics I tried weren't really any better. I'd say give it a go, I think it depends a lot on the condition of the engine.

IIRC, a 5 weight oil is thinner than specified by Toyota for a 4A-GZE though.

[ATOYOTA]

yea alot of the the cars that get serviced at toyota are castrol 10 30
magnatec that does new models and old as far as performace goes thats up to u but i do think 5w50 is a bit thin and hav heard of stories ov of mr2 turbos getting tarnished and and bing bit thin end of story if its leaking it leaking and is normally due to a hard seal rather than thin oil although thin oil will make it leak more there are heaps of brands of oil out there and at the end of the day if u do actually hav a habit ov changing it it gonna benifit the engine
i hav had new motors that hav done 10k over the 15k chage recomendation and hav a grease like gunge filler caps
doesnt look good for the 3rd or 5th owner a

[Mr Revhead]

ELF = total. same company. same oil. the ELF name is now only on their racefuel.

each toyota dealership negotiates its own oil package, so some are castrol, some shell etc.

the 3s is well known for leaking