Can I use thinner oil ?

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A friend of mine just bought a used car. The car already clocked 70,000 miles from the previous owner. According to my friend, the previous owner only use 20W-50 oils from day one. Question : Can my friend use thinner oil like 10w30 now.


Thank You and Happy New Year.


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What make model and year is the car? 20-50 is really too heavey for modern vehicles
 
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He's in Malaysia. There may be market issues with non-synthetic oils like in Oz. You'll note that most of the Oz crowd thinks that they (may) need 50-70 weights, yet AFAIK, there's no widely available 70 weight synthetic ..and not even the higher powered Euro's spec it. They're using the thin stuff by their standards.

If he can find 15w40 or a 10w30 that's not some barge swill, he'll do fine.
 
Malaysia huh? I have heard this a few times. Seems like the 20w50 is very popular over there.

Vehicle info is very important here (Make, model, engine & driving type/habits).
 
Originally Posted By: sw99


Vehicle info is very important here (Make, model, engine & driving type/habits).


correct.
 
Originally Posted By: DieselTech
What make model and year is the car? 20-50 is really too heavey for modern vehicles


I know 50 wt oil is heavy but it is very popular here. Ambient temperature here is 90F all year round (Malaysia is located near the Equator). Car is Daihatsu Charade if you guys ever heard of it. It is a small 1,000cc car.This car is mostly for city driving.


Thank You.
 
Daihatsu Charade
The Daihatsu Charade was a supermini sold from 1977 to 2000. Daihatsu considers the Charade a large "compact" car to differentiate it from other compacts in its lineup, such as the Daihatsu Mira/Cuore.

G10 (1977–83)
The first generation (G10) appeared in 1977. It was available as 3-door or 5-door hatchback, powered only by a 993cc 3-cylinder engine with 50hp JIS (37kW).

The early G10 (Series 1) had round headlights and the late G10 (Series 2) had square headlights.

The Daihatsu Charade was very popular in Chile during the 1980s.

The Charade sold in Chile between 1978-1984 was called the G20. The first generation (1978-1980) had round headlights, the second generation (1980-1984) had square headlights, both powered by an 843cc 3-cylinder engine. Also available was the "Runabout" version, which was a 3-door hatchback with two little round windows in the back.

G11 (1983–87)
The second generation (G11) was released in 1983, again as a 3- or 5-door hatchback. It featured several variations of the 3-cylinder 1.0L engine, including a turbocharged version with 68hp JIS and a Diesel version. A 5-speed manual transmission was available. The G11 was produced with two frontends, colloquially known as "square-eyes" (Series 1) and "cat-eyes" (Series 2).
 
G100 (1987–94)
The third generation of the Daihatsu Charade (G100) debuted in 1987. It originally shipped with a 1.0L 3-cylinder engine (CB23) and 1.3L four-cylinder with single carburetor (HC-C). A 1.0L turbo diesel, a 1.0L twin-cam turbo (CB70)(CB80) , named GTti and delivering 101hp JIS (74kW), a 1.3L fuel injected 4-cylinder (HC-E) and 3-cylinder (CB90) were later added. It was released in a 3-door and a 5-door hatchback. A 4-door sedan was released with the 1.3L EFI engine in 1988. In Japan the GTti version was available, dubbed GT-XX, featured a sunroof, power windows, air-con and power steering. Also the interior was quite different from the GTti in that the fuse box was mounted inside the car and the seats were of a different design. The exterior featured side skirts, Speedline alloys and a different rear spoiler to the GTti.

The GTti was able to claim to be the first production car to produce 100bhp per litre and was also the fastest 1 litre production car made. It also had a fairly successful rally career competing in the RAC Lombard Rally in 1989 and 1990 and was highly competitive in the Safari Rally. The GTti won class honours many times and was able to mix it with some of the 2 litre cars on occasion troubling some of the 4wd cars!

The third-generation car was sold in the United States for just four years, from 1988 through 1992. The car sold poorly, perhaps because of its high price, few dealerships, and unfortunate translation of the name Charade into English, and the company withdrew permanently from the US market. Sales for 1989 were 15,118. Only the 3-door hatchback and sedan were available. The North American Charade appeared in three different trim levels until 1989; the CES (Base model), CLS, and CLX. The CES came with a 53 BHP, 1.0L 3-Cylinder, Electronically Fuel Injected engine known as the CB-90. The other two variants were available with the standard CB-90 or the more powerful 1.3L 4-Cylinder Electronically Fuel Injected HC-E. In 1990, the trim levels were reduced to just two, the SE (Base Model) and SX. All models were available with a 5-Speed manual gearbox or an automatic transmission.

In the Australian market, the GTti was unavailable and the turbocharged petrol Charade used the carburetor engine (CB60/61) from the previous generation.

G200 (1994–2000)
The fourth generation was introduced in 1994, again with hatchback and sedan bodies. A 1.0L engine was the base model in Japan, but in many European countries, the SOHC 1.3L was used. The sedan, introduced in 1994, featured a 1.5L engine with optional 4WD. The Diesel models were dropped in all markets where they were previously available.

The turbocharged GTti version was replaced by a more conventional GTi with an SOHC 16-valve 1.6L engine. This version was engineered by Italian ex-racing driver De Tomaso (the previous owner of Innocenti), including racing-derived camshafts, and was capable of 124hp JIS (91kW) in the Japanese market. The export version was detuned to 105hp DIN (77kW). De Tomaso also added their own bodykit, Recaro seats, a Nardi Torino steering wheel, and Pirelli sports tyres. A total of 120,000 Charade GTi were produced following this joint effort.

The Charade was restyled in 1996, only two years after release (with the codename G203). It had a ‘smiley face’ grille and changed headlights, looking more like its Toyota sibling the Starlet. It was produced until 2000, when it was replaced by the Sirion/Storia.
 
At 90F ambient all year if I didn't use 20w50 multigrade and were to step down to a 30w then I would use a straight 30w or maybe a 40w. Possibly even a 15w40 HDEO.
 
I visited Malaysia in October 1993. I walked out of the airport terminal at 2:00 a.m. Walking out those doors into the outer air was like walking into a sweltering furnace. The traffic was majority motorcycles - 125 to 250cc level.
 
Originally Posted By: Gary Allan
He's in Malaysia. There may be market issues with non-synthetic oils like in Oz. You'll note that most of the Oz crowd thinks that they (may) need 50-70 weights, yet AFAIK, there's no widely available 70 weight synthetic ..and not even the higher powered Euro's spec it. They're using the thin stuff by their standards.

If he can find 15w40 or a 10w30 that's not some barge swill, he'll do fine.


+1
 
Originally Posted By: PT1
At 90F ambient all year if I didn't use 20w50 multigrade and were to step down to a 30w then I would use a straight 30w or maybe a 40w. Possibly even a 15w40 HDEO.



I myself use monograde SAE 30 oils. In fact I could say that I'm the only person in my country that I know of, that use straight SAE 30 oils. This monograde SAE 30 oil is very hard to find here and I got mine from an industrial lubricant supplier ( Mobil Delvac 1330 ) . As I said before 50 wt oils is very popular here. Most synthetic here is 50 and 40 wt. Even Mobil 1 sold here is 0W-40 and 5W-50.


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