Age old Question/Argument

[packratbimmer]

^^^ supermansocks95 has a good formula that would work well in TX

Not sure about the 15w 40 for Maine winters

[supermansocks95]

^^^ supermansocks95 has a good formula that would work well in TX

Not sure about the 15w 40 for Maine winters

Middle of Kansas, where the weather is in the 90's/100's regularly in the summer and in the teens to 30's in the winter but also goes to the 60's sometimes. This state kinda sucks.

[supermansocks95]

hmmm...

well i live in TEXAS & its literally 104 right now ive been using mobil 1 10w30...and was thinking about upgrading to the extended performance, any idea on which castrol full synthetic would be the equivalent to mobil 1? edge? @packratbimmer


shottz.

Yeeeaaaaahhhhh...... Change that to 20w-50 as soon as you can...

[staysideways]

Yeeeaaaaahhhhh...... Change that to 20w-50 as soon as you can...

I have been running 20w-50 in my car for two years and nothing fancy of a oil just 76 super synthetic blend. I add zinc additive also. Have not found anything on my drain plug magnet yet. Well nothing bad.


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[packratbimmer]

Still looking for a good winter oil with plenty of zddp probably 10w 30 or 5W 30. Here is a common block temp at noon up here:

[dnguyen1963]

Do not use 5w30 in this engine unless you want to wear down the internal parts quickly. For winter driving, go with at least 0w40. I have run 15w40 down to 10F in Madison, WI without any problem. I just parked the car when the temp drops below that.

[shoshottz]

+1 on the Castrol
20w50 synth blend(working up to full) in the summers

rotella 15w40 in the winters

r u in this texas heat!? @supermansocks95


shottz.

[shoshottz]

Yeeeaaaaahhhhh...... Change that to 20w-50 as soon as you can...

ok just saw this ill give it a try...


shottz.

[M_3_X]

What brand of 20W50 are you guys using? The previous owner has been using 5w30 full synt. Can I switch to a synthetic blend without issues?
I've been using Castrol GTX high mileage on my '89 VW Cabriolet for many years with good pressures.

[dnguyen1963]

What brand of 20W50 are you guys using? The previous owner has been using 5w30 full synt. Can I switch to a synthetic blend without issues?
I've been using Castrol GTX high mileage on my '89 VW Cabriolet for many years with good pressures.

Damn...switch over asap. Do a valve adjustment as soon as you can. Not sure if there is any other damage from running 5w30 for a long time. I tried 5w30 in the dead of winter once to see if it would help. Yes, starting the car with 5w30 at 0 F was much easier, but it takes only 10 - 15 min to get the engine to normal operating temp. At normal operating temp 5w30 is way too thin. I switched back to 15w40 after only one day and did not like the look of the 5w30 oil coming off the engine (metal flakes?).

[ahlem]

421000 miles on Mobil1 15W50 in an M30B35.

[jeffnhiscars]

You all have too much time on your hands. I mean really.....which oil ???..lol

[supermansocks95]

r u in this texas heat!?

Central Kansas; it definitely gets up there.

[digger]

At normal operating temp 5w30 is way too thin.

based on what data ? i wouldnt have hesitation in using 10W-30 in winter here and we get mild winter where min is 35F. the oil temp doesnt really exceed 180F so the voscosity is probably the same as a 10W-50 in summer at 200F. im talking just normal street driving. not talking about getting temps upto 110C+ on the track

[shoshottz]

throw some seafoam in there & drive a couple miles b4 oil change... should clean out the ceankcase supremely.


shottz.